Crizotinib Kemofarmacija

Crizotinib Kemofarmacija as monotherapy is indicated for:

- The first-line treatment of adults with anaplastic lymphoma kinase (ALK)-positive advanced non-small cell lung cancer (NSCLC)

- The treatment of adults with previously treated anaplastic lymphoma kinase (ALK)-positive advanced non-small cell lung cancer (NSCLC)

- The treatment of adults with ROS1-positive advanced non-small cell lung cancer (NSCLC)

Treatment with Crizotinib Kemofarmacija should be initiated and supervised by a physician experienced in the use of anticancer medicinal products.

ALK and ROS1 testing

Either ALK-positive or ROS1-positive NSCLC status should be established prior to initiation of crizotinib therapy.

Assessment should be performed by laboratories with demonstrated proficiency in the specific technology being utilised.

Posology

The recommended dose schedule of Crizotinib Kemofarmacija is 250 mg twice daily (500 mg daily) taken continuously.

If a dose is missed, then it should be taken as soon as the patient remembers unless it is less than 6 hours until the next dose, in which case the patient should not take the missed dose. Patients should not take 2 doses at the same time to make up for a missed dose.

Dose adjustments

Dosing interruption and/or dose reduction may be required based on individual safety and tolerability. In 1722 patients treated with crizotinib with either ALK-positive or ROS1-positive NSCLC across clinical studies, the most frequent adverse reactions (>3%) associated with dosing interruptions were neutropenia, elevated transaminases, vomiting, and nausea. The most frequent adverse reactions (>3%) associated with dose reductions were elevated transaminases and neutropenia. If dose reduction is necessary, then the dose of Crizotinib Kemofarmacija should be reduced to 200 mg taken twice daily. If further dose reduction is necessary, then the dose should be modified to 250 mg taken once daily based on individual safety and tolerability. Dose reduction guidelines for haematological and non-haematological toxicities are provided in Tables 1 and 2.

Table 1. Crizotinib Kemofarmacija dose modification - haematological toxicities^a,b

a. Except lymphopenia (unless associated with clinical events, e.g., opportunistic infections).

b.8.

c. National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events

d. In case of recurrence, dosing should be withheld until recovery to Grade ≤2, then dosing should be resumed at 250 mg once daily. Crizotinib Kemofarmacija must be permanently discontinued in case of further Grade 4 recurrence.

Table 2. Crizotinib Kemofarmacija dose modification - non-haematological toxicities

a. NCI Common Terminology Criteria for Adverse Events

b.8.

c.8.

d. Heart rate less than 60 beats per minute (bpm).

e. Permanently discontinue for recurrence.

Hepatic impairment

Crizotinib is extensively metabolized in the liver.8 and 5.2).

Based on the National Cancer Institute (NCI) classification, no starting dose adjustment of crizotinib is recommended for patients with mild hepatic impairment (either AST > Upper Limit of Normal (ULN) and total bilirubin ≤ULN or any AST and total bilirubin >ULN but ≤1.5 × ULN). The starting crizotinib dose for patients with moderate hepatic impairment (any AST and total bilirubin >1.5 × ULN and ≤3 × ULN) is recommended to be 200 mg twice daily. The starting crizotinib dose for patients with severe hepatic impairment (any AST and total bilirubin >3 × ULN) is recommended to be 250 mg once daily. Crizotinib dose adjustment according to Child-Pugh classification has not been studied in patients with hepatic impairment.

Renal impairment

No starting dose adjustment is recommended for patients with mild (60≤ creatinine clearance [CL_cr] <90 mL/min) or moderate (30≤ CL_cr <60 mL/min) renal impairment, since the population pharmacokinetic analysis indicated no clinically meaningful changes in steady-state crizotinib exposure in these patients. Crizotinib plasma concentrations may be increased in patients with severe renal impairment (CL_cr <30 mL/min). The crizotinib starting dose should be adjusted to 250 mg taken orally once daily in patients with severe renal impairment not requiring peritoneal dialysis or haemodialysis. The dose may be increased to 200 mg twice daily based on individual safety and tolerability after at least 4 weeks of treatment.

Elderly

No starting dose adjustment is required.

Paediatric population

The safety and efficacy of crizotinib in paediatric patients has not been established. No data are available.

Method of administration

The capsules should be swallowed whole preferably with water, and should not be crushed, dissolved, or opened. They may be taken with or without food. Grapefruit or grapefruit juice should be avoided since it may increase crizotinib plasma concentration; St. John's wort should be avoided since it may decrease crizotinib plasma concentration.

Assessment of ALK and ROS1 status

When assessing either ALK or ROS1 status of a patient, it is important that a well-validated and robust methodology is chosen to avoid false negative or false positive determinations.

Hepatotoxicity

Drug-induced hepatotoxicity (including cases with fatal outcome) has been reported in patients treated with crizotinib across clinical trials.

Interstitial lung disease/pneumonitis

Severe, life-threatening, or fatal interstitial lung disease (ILD)/pneumonitis can occur in patients treated with crizotinib. Patients with pulmonary symptoms indicative of ILD/pneumonitis should be monitored. Crizotinib treatment should be withheld if ILD/pneumonitis is suspected. Drug-induced ILD/pneumonitis should be considered in the differential diagnosis of patients with ILD-like conditions such as: pneumonitis, radiation pneumonitis, hypersensitivity pneumonitis, interstitial pneumonitis, pulmonary fibrosis, acute respiratory distress syndrome (ARDS), alveolitis, lung infiltration, pneumonia, pulmonary oedema, chronic obstructive pulmonary disease, pleural effusion, aspiration pneumonia, bronchitis, obliterative bronchiolitis, and bronchiectasis. Other potential causes of ILD/pneumonitis should be excluded, and crizotinib should be permanently discontinued in patients diagnosed with treatment-related ILD/pneumonitis.

QT interval prolongation

QTc prolongation has been observed in clinical studies in patients treated with crizotinib which may lead to an increased risk for ventricular tachyarrhythmias (e.g., Torsade de Pointes) or sudden death.8 and 5.2.

Bradycardia

All-causality bradycardia was reported in clinical studies in 13% of patients treated with crizotinib. Symptomatic bradycardia (e.g., syncope, dizziness, hypotension) can occur in patients receiving crizotinib. The full effect of crizotinib on reduction of heart rate may not develop until several weeks after start of treatment. Avoid using crizotinib in combination with other bradycardic agents (e.g., beta-blockers, non-dihydropyridine calcium channel blockers such as verapamil and diltiazem, clonidine, digoxin) to the extent possible, due to the increased risk of symptomatic bradycardia. Monitor heart rate and blood pressure regularly. Dose modification is not required in cases of asymptomatic bradycardia. For management of patients who develop symptomatic bradycardia, see Dose Modification and Undesirable Effects sections.

Cardiac failure

In clinical studies with crizotinib and during post marketing surveillance, severe, life-threatening, or fatal adverse reactions of cardiac failure were reported.

Patients with or without pre-existing cardiac disorders, receiving crizotinib, should be monitored for signs and symptoms of heart failure (dyspnoea, oedema, rapid weight gain from fluid retention). Dosing interruption, dose reduction, or discontinuation should be considered as appropriate if such symptoms are observed.

Neutropenia and leukopenia

In clinical studies with crizotinib in patients with either ALK-positive or ROS1-positive NSCLC, Grade 3 or 4 neutropenia has been very commonly (12%) reported. Grade 3 or 4 leukopenia has been commonly (3%) reported. Less than 0.5% of patients experienced febrile neutropenia in clinical studies with crizotinib. Complete blood counts including differential white blood cell counts should be monitored as clinically indicated, with more frequent repeat testing if Grade 3 or 4 abnormalities are observed, or if fever or infection occurs.

Gastrointestinal perforation

In clinical studies with crizotinib, events of gastrointestinal perforations were reported. There were reports of fatal cases of gastrointestinal perforation during post-marketing use of crizotinib.

Crizotinib should be used with caution in patients at risk for gastrointestinal perforation (e.g., history of diverticulitis, metastases to the gastrointestinal tract, concomitant use of medicinal products with a recognized risk of gastrointestinal perforation).

Crizotinib should be discontinued in patients who develop gastrointestinal perforation. Patients should be informed of the first signs of gastrointestinal perforations and be advised to consult rapidly in case of occurrence.

Renal effects

Blood creatinine increase and creatinine clearance decreased were observed in patients in clinical studies with crizotinib. Renal failure and acute renal failure were reported in patients treated with crizotinib in clinical trials and during post marketing. Cases with fatal outcome, cases requiring hemodialysis and cases of grade 4 hyperkalemia were also observed. Monitoring of patients for renal function at baseline and during therapy with crizotinib is recommended, with particular attention to those who have risk factors or previous history of renal impairment.

Renal impairment

If patients have severe renal impairment not requiring peritoneal dialysis or haemodialysis, the dose of crizotinib should be adjusted.

Visual effects

In clinical studies with crizotinib in patients with either ALK-positive or ROS1-positive NSCLC (N=1722), Grade 4 visual field defect with vision loss has been reported in 4 (0.2%) patients. Optic atrophy and optic nerve disorder have been reported as potential causes of vision loss.

In patients with new onset of severe visual loss (best corrected visual acuity less than 6/60 in one or both eyes), crizotinib treatment should be discontinued. Ophthalmological evaluation consisting of best corrected visual acuity, retinal photographs, visual fields, optical coherence tomography (OCT) and other evaluations as appropriate for new onset of severe visual loss, should be performed. There is insufficient information to characterize the risks of resumption of crizotinib in patients with a severe visual loss. A decision to resume crizotinib should consider the potential benefit to the patient.

Ophthalmological evaluation is recommended if vision disorder persists or worsens in severity.

Drug-drug interactions

The concomitant use of crizotinib with strong CYP3A4 inhibitors or with strong and moderate CYP3A4 inducers should be avoided.

The concomitant use of crizotinib with CYP3A4 substrates with narrow therapeutic indices should be avoided.5).

Drug-food interaction

Grapefruit or grapefruit juice should be avoided during treatment with crizotinib.

Non-adenocarcinoma histology

Limited information is available in patients with ALK-positive and ROS1-positive NSCLC with non-adenocarcinoma histology, including squamous cell carcinoma (SCC).

Caution should be exercised when driving or operating machines as patients may experience symptomatic bradycardia (e.g., syncope, dizziness, hypotension), vision disorder, or fatigue while taking Crizotinib Kemofarmacija .

Summary of the safety profile

The data described below reflect exposure to Crizotinib Kemofarmacija in 1669 patients with ALK-positive advanced NSCLC who participated in 2 randomised Phase 3 studies (Studies 1007 and 1014) and in 2 single-arm studies (Studies 1001 and 1005), and in 53 patients with ROS1-positive advanced NSCLC who participated in single-arm Study 1001, for a total of 1722 patients. These patients received a starting oral dose of 250 mg taken twice daily continuously. In Study 1014, the median duration of study treatment was 47 weeks for patients in the crizotinib arm (N=171); the median duration of treatment was 23 weeks for patients who crossed over from the chemotherapy arm to receive crizotinib treatment (N=109). In Study 1007, the median duration of study treatment was 48 weeks for patients in the crizotinib arm (N=172). For ALK-positive NSCLC patients in Studies 1001 (N=154) and 1005 (N=1063), the median duration of treatment was 57 and 45 weeks, respectively. For ROS1-positive NSCLC patients in Study 1001 (N=53), the median duration of treatment was 101 weeks.

The most serious adverse reactions in 1722 patients with either ALK-positive or ROS1-positive advanced NSCLC were hepatotoxicity, ILD/pneumonitis, neutropenia, and QT interval prolongation. The most common adverse reactions (>25%) in patients with either ALK-positive or ROS1-positive NSCLC were vision disorder, nausea, diarrhoea, vomiting, oedema, constipation, elevated transaminases, fatigue, decreased appetite, dizziness, and neuropathy.

Tabulated list of adverse reactions

Table 3 presents adverse reactions reported in 1722 patients with either ALK-positive or ROS1-positive advanced NSCLC who received crizotinib across 2 randomised Phase 3 studies (1007 and 1014) and 2 single-arm clinical studies (1001 and 1005).

The most frequent adverse reactions (>3%, all-causality frequency) associated with dosing interruptions were neutropenia (11%), elevated transaminases (7%), vomiting (5%), and nausea (4%). The most frequent adverse reactions (>3%, all-causality frequency) associated with dose reductions were elevated transaminases (4%) and neutropenia (3%). All-causality adverse events associated with permanent treatment discontinuation occurred in 302 (18%) patients of which the most frequent (>1%) were interstitial lung disease (1%) and elevated transaminases (1%).

The adverse reactions listed in Table 3 are presented by system organ class and frequency categories, defined using the following convention: very common (>1/10); common (>1/100 to <1/10), uncommon (>1/1,000 to <1/100), rare (>1/10,000 to <1/1,000), very rare (<1/10,000), not known (cannot be estimated from the available data). Within each frequency grouping, undesirable effects are presented in order of decreasing seriousness.

Table 3. Adverse reactions reported in crizotinib clinical studies (N=1722)

Event terms that represent the same medical concept or condition were grouped together and reported as a single adverse drug reaction in Table 3. Terms actually reported in the study up to the data cutoff date and contributing to the relevant adverse drug reaction are indicated in parentheses, as listed below.

a. Neutropenia (Febrile neutropenia, Neutropenia, Neutrophil count decreased).

b. Anaemia (Anaemia, Haemoglobin decreased, Hypochromic anaemia).

c. Leukopenia (Leukopenia, White blood cell count decreased).

d. Neuropathy (Burning sensation, Dysaesthesia, Formication, Gait disturbance, Hyperaesthesia, Hypoaesthesia, Hypotonia, Motor dysfunction, Muscle atrophy, Muscular weakness, Neuralgia, Neuritis, Neuropathy peripheral, Neurotoxicity, Paraesthesia, Peripheral motor neuropathy, Peripheral sensorimotor neuropathy, Peripheral sensory neuropathy, Peroneal nerve palsy, Polyneuropathy, Sensory disturbance, Skin burning sensation).

e. Vision disorder (Diplopia, Halo vision, Photophobia, Photopsia, Vision blurred, Visual acuity reduced, Visual brightness, Visual impairment, Visual perseveration, Vitreous floaters).

f. Dizziness (Balance disorder, Dizziness, Dizziness postural, Presyncope).

g. Bradycardia (Bradycardia, Heart rate decreased, Sinus bradycardia).

h. Cardiac failure (Cardiac failure, Cardiac failure congestive, Ejection fraction decreased, Left ventricular failure, Pulmonary oedema). Across clinical studies (n=1722), 19 (1.1%) patients treated with crizotinib had any grade cardiac failure, 8 (0.5%) patients had Grade 3 or 4, and 3 (0.2%) patients had fatal outcome.

i. Interstitial lung disease (Acute respiratory distress syndrome, Alveolitis, Interstitial lung disease, Pneumonitis).

j. Abdominal pain (Abdominal discomfort, Abdominal pain, Abdominal pain lower, Abdominal pain upper, Abdominal tenderness).

k. Oesophagitis (Oesophagitis, Oesophageal ulcer).

l. Gastrointestinal perforation (Gastrointestinal perforation, Intestinal perforation, Large intestine perforation).

m. Elevated transaminases (Alanine aminotransferase increased, Aspartate aminotransferase increased, Gamma-glutamyltransferase increased, Hepatic enzyme increased, Hepatic function abnormal, Liver function test abnormal, Transaminases increased).

n. Renal cyst (Renal abscess, Renal cyst, Renal cyst haemorrhage, Renal cyst infection).

o. Blood creatinine increased (blood creatinine increased, creatinine renal clearance decreased).

p. Oedema (Face oedema, Generalised oedema, Local swelling, Localised oedema, Oedema, Oedema peripheral, Periorbital oedema).

q. Blood testosterone decreased (Blood testosterone decreased, Hypogonadism, Secondary hypogonadism).

Description of selected adverse reactions

Hepatotoxicity

Drug-induced hepatotoxicity with fatal outcome occurred in 0.1% of 1722 patients treated with crizotinib across clinical trials. Concurrent elevations in ALT and/or AST >3 × ULN and total bilirubin >2 × ULN without significant elevations of alkaline phosphatase (≤2 × ULN) have been observed in less than 1% patients treated with crizotinib.

Increases to Grade 3 or 4 ALT or AST elevations were observed in 187 (11%) and 95 (6%) of patients, respectively. Seventeen (1%) patients required permanent discontinuation from treatment associated with elevated transaminases, suggesting that these events were generally manageable by dosing modifications as defined in Table 2. In randomised Phase 3 Study 1014, increases to Grade 3 or 4 ALT or AST elevations were observed in 15% and 8% of patients receiving crizotinib versus 2% and 1% of patients receiving chemotherapy. In randomised Phase 3 Study 1007, increases to Grade 3 or 4 ALT or AST elevations were observed in 18% and 9% of patients receiving crizotinib and 5% and <1% of patients receiving chemotherapy.

Transaminase elevations generally occurred within the first 2 months of treatment. Across studies with crizotinib in patients with either ALK-positive or ROS1-positive NSCLC, median time to onset of increased Grade 1 or 2 transaminases was 23 days. Median time to onset of increased Grade 3 or 4 transaminases was 43 days.

Grade 3 and 4 transaminase elevations were generally reversible upon dosing interruption. Across studies with crizotinib in patients with either ALK-positive or ROS1-positive NSCLC (N=1722), dose reductions associated with transaminase elevations occurred in 76 (4%) patients. Seventeen (1%) patients required permanent discontinuation from treatment.

Gastrointestinal effects

Nausea (57%), diarrhoea (54%), vomiting (51%), and constipation (43%) were the most commonly reported all-causality gastrointestinal events. Most events were mild to moderate in severity. Median times to onset for nausea and vomiting were 3 days, and these events declined in frequency after 3 weeks of treatment. Supportive care should include the use of antiemetic medicinal products. Median times to onset for diarrhoea and constipation were 13 and 17 days, respectively. Supportive care for diarrhoea and constipation should include the use of standard antidiarroheal and laxative medicinal products, respectively.

In clinical studies with crizotinib, events of gastrointestinal perforations were reported. There were reports of fatal cases of gastrointestinal perforation during post-marketing use of crizotinib.

QT interval prolongation

Across studies in patients with either ALK-positive or ROS1-positive advanced NSCLC, QTcF (corrected QT by the Fridericia method) >500 msec was recorded in 34 (2.1%) of 1619 patients with at least 1 postbaseline ECG assessment and a maximum increase from baseline in QTcF >60 msec was observed in 79 (5.0%) of 1585 patients with a baseline and at least 1 postbaseline ECG assessment. All-causality Grade 3 or 4 Electrocardiogram QT prolonged was reported in 27 (1.6%) out of 1722 patients.

In a single arm ECG substudy using blinded manual ECG measurements 11 (21%) patients had an increase from Baseline in QTcF value >30 to <60 msec and 1 (2%) patient had an increase from Baseline in QTcF value of >60 msec. No patients had a maximum QTcF >480 msec. The central tendency analysis indicated that the largest mean change from baseline in QTcF was 12.3 msec (95% CI 5.1-19.5 msec, least squares mean [LS] from Analysis of Variance [ANOVA]) and occurred at 6 hours post-dose on Cycle 2 Day 1. All upper limits of the 90% CI for the LS mean change from Baseline in QTcF at all Cycle 2 Day 1 time points were <20 msec.

QT prolongation can result in arrhythmias and is a risk factor for sudden death. QT prolongation may clinically manifest as bradycardia, dizziness, and syncope. Electrolyte disturbances, dehydration and bradycardia may further increase the risk of QTc prolongation and thus, periodic monitoring of ECG and electrolyte levels is recommended in patients with GI toxicity.

Bradycardia

In studies with crizotinib in patients with either ALK-positive or ROS1-positive advanced NSCLC, all-causality bradycardia was experienced by 219 (13%) of 1722 patients treated with crizotinib. Most events were mild in severity. A total of 259 (16%) of 1666 patients with at least 1 postbaseline vital sign assessment had a pulse rate <50 bpm.

The use of concomitant medicinal products associated with bradycardia should be carefully evaluated. Patients who develop symptomatic bradycardia should be managed as recommended in the Dose Modification and Warnings and Precautions sections.

Interstitial lung disease/pneumonitis

Severe, life-threatening, or fatal interstitial lung disease (ILD)/pneumonitis can occur in patients treated with crizotinib. Across studies in patients with either ALK-positive or ROS1-positive NSCLC (N=1722), 50 (3%) patients treated with crizotinib had any grade all-causality ILD, including 18 (1%) patients with Grade 3 or 4, and 8 (<1%) patients with fatal cases. According to an independent review committee (IRC) assessment of patients with ALK-positive NSCLC (N=1669), 20 (1.2%) patients had ILD/pneumonitis, including 10 (<1%) patients with fatal cases. These cases generally occurred within 3 months after the initiation of treatment. Patients with pulmonary symptoms indicative of ILD/pneumonitis should be monitored. Other potential causes of ILD/pneumonitis should be excluded.

Visual effects

In clinical studies with crizotinib in patients with either ALK-positive or ROS1-positive advanced NSCLC (N=1722), Grade 4 visual field defect with vision loss has been reported in 4 (0.2%) patients. Optic atrophy and optic nerve disorder have been reported as potential causes of vision loss.

All-causality, all grade, vision disorder, most commonly visual impairment, photopsia, vision blurred, and vitreous floaters, was experienced by 1084 (63%) of 1722 patients treated with crizotinib. Of the 1084 patients who experienced vision disorder, 95% had events that were mild in severity. Seven (0.4%) patients had temporary treatment discontinuation and 2 (0.1%) patients had a dose reduction associated with vision disorder. There were no permanent discontinuations associated with vision disorder for any of the 1722 patients treated with crizotinib.

Based on the Visual Symptom Assessment Questionnaire (VSAQ-ALK), patients treated with crizotinib in Study 1007 and Study 1014 reported a higher incidence of visual disturbances compared to patients treated with chemotherapy. The onset of vision disorders generally started within the first week of drug administration. The majority of patients on the crizotinib arm in randomised Phase 3 Studies 1007 and 1014 (>50%) reported visual disturbances; which occurred at a frequency of 4 to 7 days each week, lasted up to 1 minute, and had mild or no impact (scores 0 to 3 out of a maximum score of 10) on daily activities as captured by the VSAQ-ALK questionnaire.

An ophthalmology substudy using specific ophthalmic assessments at specified time points was conducted in 54 patients with NSCLC who received crizotinib 250 mg twice daily. Thirty-eight (70.4%) of the 54 patients experienced an Eye Disorders System Organ Class treatment-emergent all-causality adverse event of which 30 patients had ophthalmic examinations. Of the 30 patients, an ophthalmic abnormality of any type was reported in 14 (36.8%) patients and no ophthalmic finding was seen in 16 (42.1%) patients. The most common findings concerned slit lamp biomicroscopy (21.1%), fundoscopy (15.8%) and visual acuity (13.2%). Pre-existing ophthalmic abnormalities and concomitant medical conditions which could be contributory to ocular findings were noted in many patients, and no conclusive causal relationship to crizotinib could be determined. There were no findings related to aqueous cell count and anterior chamber aqueous flare assessment. No visual disturbances associated with crizotinib appeared to be related to changes in best corrected visual acuity, the vitreous, the retina, or the optic nerve.

In patients with new onset of Grade 4 visual loss, crizotinib treatment should be discontinued and ophthalmological evaluation should be performed. Ophthalmological evaluation is recommended if vision disorder persists or worsens in severity.

Nervous system effects

All-causality neuropathy, as defined in Table 3, was experienced by 435 (25%) out of 1722 patients treated with crizotinib. Dysgeusia was also very commonly reported in these studies, and was primarily Grade 1 in severity.

Renal cyst

All-causality complex renal cysts were experienced by 52 (3%) of 1722 patients treated with crizotinib. Local cystic invasion beyond the kidney was observed in some patients. Periodic monitoring with imaging and urinalysis should be considered in patients who develop renal cysts.

Neutropenia and leukopenia

Across studies in patients with either ALK-positive or ROS1-positive advanced NSCLC (N=1722), Grade 3 or 4 neutropenia was observed in 212 (12%) patients treated with crizotinib. Median time to onset of any grade neutropenia was 89 days. Neutropenia was associated with dose reduction or permanent treatment discontinuation for 3% and <1% of patients, respectively. Less than 0.5% of patients experienced febrile neutropenia in clinical studies with crizotinib.

Across studies in patients with either ALK-positive or ROS1-positive advanced NSCLC (N=1722), Grade 3 or Grade 4 leukopenia was observed in 48 (3%) patients treated with crizotinib. Median time to onset of any grade leukopenia was 85 days.

Leukopenia was associated with a dose reduction for <0.5% of patients, and no patients permanently discontinued crizotinib treatment associated with leukopenia.

In clinical studies of crizotinib in patients with either ALK-positive or ROS1-positive advanced NSCLC, shifts to Grade 3 or 4 decreases in leukocytes and neutrophils were observed at frequencies of 4% and 13%, respectively.

Complete blood counts including differential white blood cell counts should be monitored as clinically indicated, with more frequent repeat testing if Grade 3 or 4 abnormalities are observed, or if fever or infection occurs.

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the yellow card scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

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Treatment of overdose with the medicinal product consists of general supportive measures. There is no antidote for Crizotinib Kemofarmacija.

Pharmacotherapeutic group: Anti-neoplastic agents, protein kinase inhibitor; ATC code: L01XE16.

Mechanism of action

Crizotinib is a selective small-molecule inhibitor of the ALK receptor tyrosine kinase (RTK) and its oncogenic variants (i.e. ALK fusion events and selected ALK mutations). Crizotinib is also an inhibitor of the Hepatocyte Growth Factor Receptor (HGFR, c-Met) RTK, ROS1 (c-ros) and Recepteur d'Origine Nantais (RON) RTK. Crizotinib demonstrated concentration-dependent inhibition of the kinase activity of ALK, ROS1, and c-Met in biochemical assays and inhibited phosphorylation and modulated kinase-dependent phenotypes in cell-based assays. Crizotinib demonstrated potent and selective growth inhibitory activity and induced apoptosis in tumour cell lines exhibiting ALK fusion events (including echinoderm microtubule-associated protein-like 4 [EML4]-ALK and nucleophosmin [NPM]-ALK), ROS1 fusion events, or exhibiting amplification of the ALK or MET gene locus. Crizotinib demonstrated antitumour efficacy, including marked cytoreductive antitumour activity, in mice bearing tumour xenografts that expressed ALK fusion proteins. The antitumour efficacy of crizotinib was dose-dependent and correlated to pharmacodynamic inhibition of phosphorylation of ALK fusion proteins (including EML4-ALK and NPM-ALK) in tumours in vivo. Crizotinib also demonstrated marked antitumour activity in mouse xenograft studies, where tumours were generated using a panel of NIH-3T3 cell lines engineered to express key ROS1 fusions identified in human tumours. The antitumour efficacy of crizotinib was dose-dependent and demonstrated a correlation with inhibition of ROS1 phosphorylation in vivo.

Clinical studies

Previously untreated ALK-positive advanced NSCLC - randomised Phase 3 Study 1014

The efficacy and safety of crizotinib for the treatment of patients with ALK-positive metastatic NSCLC, who had not received previous systemic treatment for advanced disease, were demonstrated in a global, randomised, open-label Study 1014.

The full analysis population included 343 patients with ALK-positive advanced NSCLC as identified by Fluorescence In Situ Hybridization (FISH) prior to randomisation: 172 patients were randomised to crizotinib and 171 patients were randomised to chemotherapy (pemetrexed + carboplatin or cisplatin; up to 6 cycles of treatment). The demographic and disease characteristics of the overall study population were 62% female, median age of 53 years, baseline Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1 (95%), 51% White and 46% Asian, 4% current smokers, 32% past smokers and 64% never smokers. The disease characteristics of the overall study population were metastatic disease in 98% of patients, 92% of patients' tumours were classified as adenocarcinoma histology, and 27% of patients had brain metastases.

Patients could continue crizotinib treatment beyond the time of Response Evaluation Criteria in Solid Tumours (RECIST)-defined disease progression at the discretion of the investigator if the patient was still experiencing clinical benefit. Sixty-five of 89 (73%) patients treated with crizotinib and 11 of 132 (8.3%) patients treated with chemotherapy continued treatment for at least 3 weeks after objective disease progression. Patients randomised to chemotherapy could cross over to receive crizotinib upon RECIST-defined disease progression confirmed by independent radiology review (IRR). One hundred and twenty (70%) patients in the chemotherapy arm received subsequent crizotinib treatment.

Crizotinib significantly prolonged progression-free survival (PFS), the primary objective of the study, compared to chemotherapy as assessed by IRR. The PFS benefit of crizotinib was consistent across subgroups of baseline patient characteristics such as age, gender, race, smoking class, time since diagnosis, ECOG performance status, and presence of brain metastases. Efficacy data from randomised Phase 3 Study 1014 are summarised in Table 4, and the Kaplan-Meier curves for PFS and overall survival (OS) are shown in Figure 1 and 2, respectively. Overall survival (OS) data were not mature at the time of the PFS analysis.

Table 4. Efficacy results from randomised Phase 3 Study 1014 (full analysis population) in patients with previously untreated ALK-positive advanced NSCLC

Abbreviations: CI=confidence interval; HR=hazard ratio; IRR=independent radiology review; N/n=number of patients; NR=not reached; PFS=progression-free survival; OS=overall survival.

a. Median PFS times were 6.9 months (95% CI: 6.6, 8.3) for pemetrexed/cisplatin (HR=0.49; p-value <0.0001 for crizotinib compared with pemetrexed/cisplatin) and 7.0 months (95% CI: 5.9, 8.3) for pemetrexed/carboplatin (HR=0.45; p-value <0.0001 for crizotinib compared with pemetrexed/carboplatin).

b. Based on the Cox proportional hazards stratified analysis.

c. Based on the stratified log-rank test (1-sided).

d. OS analysis was not adjusted for the potentially confounding effects of crossover.

e. ORRs were 47% (95% CI: 37, 58) for pemetrexed/cisplatin (p-value <0.0001 compared with crizotinib) and 44% (95% CI: 32, 55) for pemetrexed/carboplatin (p-value <0.0001 compared with crizotinib).

f. Based on the stratified Cochran-Mantel-Haenszel test (2-sided).

g. Estimated using the Kaplan-Meier method.

Figure 1. Kaplan-Meier curves for progression-free survival (based on IRR) by treatment arm in randomised Phase 3 Study 1014 (full analysis population) in patients with previously untreated ALK-positive advanced NSCLC

Figure 2. Kaplan-Meier curves OS by treatment arm in randomised Phase 3 Study 1014 (full analysis population) in patients with previously untreated ALK-positive advanced NSCLC

For patients with previously treated baseline brain metastases, the median intracranial time to progression (IC-TTP) was 15.7 months in the crizotinib arm (N=39) and 12.5 months in the chemotherapy arm (N=40) (HR=0.45 [95% CI: 0.19, 1.07]; 1-sided p-value=0.0315). For patients without baseline brain metastases, the median IC-TTP was not reached in either the crizotinib (N=132) or the chemotherapy arms (N=131) (HR=0.69 [95% CI: 0.33, 1.45]; 1-sided p-value=0.1617).

Patient-reported symptoms and global QOL were collected using the EORTC QLQ-C30 and its lung cancer module (EORTC QLQ-LC13). A total of 166 patients in the crizotinib arm and 163 patients in the chemotherapy arm had completed the EORTC QLQ-C30 and LC13 questionnaires at baseline and at least 1 postbaseline visit. Significantly greater improvement in global QOL was observed in the crizotinib arm compared to the chemotherapy arm (overall difference in change from baseline scores 13.8; p-value <0.0001).

Time to Deterioration (TTD) was prespecified as the first occurrence of a >10-point increase in scores from baseline in symptoms of pain in chest, cough, or dyspnoea as assessed by EORTC QLQ-LC13.

Crizotinib resulted in symptom benefits by significantly prolonging TTD compared to chemotherapy (median 2.1 months versus 0.5 months; HR=0.59; 95% CI: 0.45, 0.77; Hochberg-adjusted log-rank 2-sided p-value =0.0005).

Previously treated ALK-positive advanced NSCLC -randomised Phase 3 Study 1007

The efficacy and safety of crizotinib for the treatment of patients with ALK-positive metastatic NSCLC, who had received previous systemic treatment for advanced disease, were demonstrated in a global, randomised, open-label Study 1007.

The full analysis population included 347 patients with ALK-positive advanced NSCLC as identified by FISH prior to randomisation. One hundred seventy-three (173) patients were randomised to crizotinib and 174 patients were randomised to chemotherapy (either pemetrexed or docetaxel). The demographic and disease characteristics of the overall study population were 56% female, median age of 50 years, baseline ECOG performance status 0 (39%) or 1 (52%), 52% White and 45% Asian, 4% current smokers, 33% past smokers, and 63% never smokers, 93% metastatic, and 93% of patients' tumours were classified as adenocarcinoma histology.

Patients could continue treatment as assigned beyond the time of RECIST-defined disease progression at the discretion of the investigator if the patient was perceived to be experiencing clinical benefit. Fifty-eight of 84 (69%) patients treated with crizotinib and 17 of 119 (14%) patients treated with chemotherapy continued treatment for at least 3 weeks after objective disease progression. Patients randomised to chemotherapy could crossover to receive crizotinib upon RECIST-defined disease progression confirmed by IRR.

Crizotinib significantly prolonged PFS, the primary objective of the study, compared to chemotherapy as assessed by IRR. The PFS benefit of crizotinib was consistent across subgroups of baseline patient characteristics such as age, gender, race, smoking class, time since diagnosis, ECOG performance status, presence of brain metastases and prior EGFR TKI therapy.

Efficacy data from Study 1007 are summarised in Table 5, and the Kaplan-Meier curves for PFS and OS are shown in Figure 3 and 4, respectively.

Table 5. Efficacy results from randomised Phase 3 Study 1007 (full analysis population) in patients with previously treated ALK-positive advanced NSCLC*

Abbreviations: CI=confidence interval; HR=hazard ratio; IRR=independent radiology review; N/n=number of patients; PFS=progression-free survival; OS=overall survival.

* PFS, Objective Response Rate and Duration of Response are based on the data cutoff date of 30 March 2012; OS is based on the data cutoff date of 31 August 2015.

a. The median PFS times were 4.2 months (95% CI: 2.8, 5.7) for pemetrexed (HR=0.59; p-value=0.0004 for crizotinib compared with pemetrexed) and 2.6 months (95% CI: 1.6, 4.0) for docetaxel (HR=0.30; p-value <0.0001 for crizotinib compared with docetaxel).

b. Based on the Cox proportional hazards stratified analysis.

c. Based on the stratified log-rank test (1-sided).

d. Updated based on final OS analysis. Final OS analysis was not adjusted for the potentially confounding effects of crossover (154 [89%] patients received subsequent crizotinib treatment).

e. Estimated using the Kaplan-Meier method.

f. ORRs were 29% (95% CI: 21, 39) for pemetrexed (p-value <0.0001 compared with crizotinib) and 7% (95% CI: 2, 16) for docetaxel (p-value <0.0001 compared with crizotinib).

g. Based on the stratified Cochran-Mantel-Haenszel test (2-sided).

Figure 3. Kaplan-Meier curves for progression-free survival (based on IRR) by treatment arm in randomised Phase 3 Study 1007 (full analysis population) in patients with previously treated ALK-positive advanced NSCLC

Figure 4. Kaplan-Meier curves for overall survival by treatment arm in randomised Phase 3 Study 1007 (full analysis population) in patients with previously treated ALK-positive advanced NSCLC

Fifty-two (52) patients treated with crizotinib and 57 chemotherapy-treated patients with previously treated or untreated asymptomatic brain metastases were enrolled in randomised Phase 3 Study 1007. Intracranial Disease Control Rate (IC-DCR) at 12 weeks was 65% and 46% for crizotinib and chemotherapy-treated patients, respectively.

Patient-reported symptoms and global QOL were collected using the EORTC QLQ-C30 and its lung cancer module (EORTC QLQ-LC13) at baseline (Day 1 Cycle 1) and Day 1 of each subsequent treatment cycle. A total of 162 patients in the crizotinib arm and 151 patients in the chemotherapy arm had completed the EORTC QLQ-C30 and LC13 questionnaires at baseline and at least 1 postbaseline visit.

Crizotinib resulted in symptoms benefit by significantly prolonging time to deterioration (median 4.5 months versus 1.4 months) in patients who reported symptoms of pain in chest, dyspnoea, or cough, compared to chemotherapy (HR 0.50; 95% CI: 0.37, 0.66; Hochberg adjusted log-rank p< 0.0001).

Crizotinib showed a significantly greater improvement from baseline compared to chemotherapy in alopecia (Cycles 2 to 15; p-value <0.05), cough (Cycles 2 to 20; p-value <0.0001), dyspnoea (Cycles 2 to 20; p-value <0.0001), haemoptysis (Cycles 2 to 20; p-value <0.05), pain in arm or shoulder (Cycles 2 to 20; p-value <0.0001), pain in chest (Cycles 2 to 20; p-value <0.0001), and pain in other parts (Cycles 2 to 20; p-value <0.05). Crizotinib resulted in a significantly lower deterioration from baseline in peripheral neuropathy (Cycles 6 to 20; p-value <0.05), dysphagia (Cycles 5 to 11; p-value <0.05) and sore mouth (Cycle 2 to 20; p-value <0.05) compared to chemotherapy.

Crizotinib resulted in overall global quality of life benefits with a significantly greater improvement from baseline observed in the crizotinib arm compared to the chemotherapy arm (Cycles 2 to 20; p-value <0.05).

Single-arm studies in ALK-positive advanced NSCLC

The use of single-agent crizotinib in the treatment of ALK-positive advanced NSCLC was investigated in 2 multinational, single-arm studies (Studies 1001 and 1005). Of the patients enrolled in these studies, the patients described below had received prior systemic therapy for locally advanced or metastatic disease. The primary efficacy endpoint in both studies was objective response rate (ORR) according to RECIST.

A total of 149 ALK-positive advanced NSCLC patients, including 125 patients with previously treated ALK-positive advanced NSCLC, were enrolled into Study 1001 at the time of data cutoff for PFS and ORR analysis. The demographic and disease characteristics were 50% female, median age of 51 years, baseline ECOG performance status of 0 (32%) or 1 (55%), 61% White and 30% Asian, less than 1% were current smokers, 27% former smokers, 72% never smokers, 94% metastatic, and 98% of the cancers were classified as adenocarcinoma histology. The median duration of treatment was 42 weeks.

A total of 934 patients with ALK-positive advanced NSCLC were treated with crizotinib in Study 1005 at the time of data cutoff for PFS and ORR analysis. The demographic and disease characteristics were 57% female, median age of 53 years, baseline ECOG performance status of 0/1 (82%) or 2/3 (18%), 52% White and 44% Asian, 4% current smokers, 30% former smokers, 66% never smokers, 92% metastatic, and 94% of the cancers were classified as adenocarcinoma histology. The median duration of treatment for these patients was 23 weeks. Patients could continue treatment beyond the time of RECIST-defined disease progression at the discretion of the investigator. Seventy-seven of 106 patients (73%) continued crizotinib treatment for at least 3 weeks after objective disease progression.

Efficacy data from Studies 1001 and 1005 are provided in Table 6.

Table 6: ALK-positive advanced NSCLC efficacy results from Studies 1001 and 1005

Abbreviations: CI=confidence interval; N/n=number of patients.

a. Per data cutoff dates 01 June 2011 (Study 1001) and 15 February 2012 (Study 1005).

b. Three patients were not evaluable for response in Study 1001, and 42 patients were not evaluable for response in Study 1005.

c. Estimated using the Kaplan-Meier method.

d. PFS data from Study 1005 included 807 patients in the safety analysis population who were identified by the FISH assay (data cutoff date 15 February 2012).

e. Per data cutoff date 30 November 2013.

ROS1-Positive Advanced NSCLC

The use of single-agent crizotinib in the treatment of ROS1-positive advanced NSCLC was investigated in multicenter, multinational, single-arm Study 1001. A total of 53 ROS1-positive advanced NSCLC patients were enrolled in the study at the time of data cutoff, including 46 patients with previously treated ROS1-positive advanced NSCLC and a limited number of patients (N=7) who had no prior systemic treatment. The primary efficacy endpoint was ORR according to RECIST. Secondary endpoints included TTR, DR, PFS, and OS. Patients received crizotinib 250 mg orally twice daily.

The demographic characteristics were 57% female; median age 55 years; baseline ECOG performance status of 0 or 1 (98%) or 2 (2%), 57% White and 40% Asian; 25% former smokers, and 75% never smokers. The disease characteristics were 91% metastatic, 96% adenocarcinoma histology, and 13% with no prior systemic therapy for metastatic disease.

In Study 1001, patients were required to have advanced ROS1-positive advanced NSCLC prior to entering the clinical trial. For most patients, ROS1-positive NSCLC was identified by FISH. The median duration of treatment was 101 weeks. There were 5 complete responses and 32 partial responses for an ORR of 70% (95% CI: 56%, 82%). The median DR was not reached (95% CI: 15.2 months, NR). Fifty-one percent of objective tumour responses were achieved during the first 8 weeks of treatment. The median PFS at the time of data cutoff was 19.3 months (95% CI: 14.8, NR). Overall survival data were not mature at the time of data cutoff.

Efficacy data from ROS1-positive advanced NSCLC patients from Study 1001 are provided in Table 7.

Table 7. ROS1-positive advanced NSCLC efficacy results from Study 1001

Non-adenocarcinoma histology

Twenty-one patients with previously untreated and 12 patients with previously treated advanced ALK-positive non-adenocarcinoma histology NSCLC were enrolled in randomised Phase 3 Studies 1014 and 1007, respectively. The subgroups in these studies were too small to draw reliable conclusions. Of note, no patients with SCC histology were randomised in the crizotinib arm in Study 1007 and no patients with SCC were enrolled in Study 1014 due to pemetrexed-based regimen being used as a comparator.

Information is available from 45 response-evaluable patients with previously treated non-adenocarcinoma NSCLC (including 22 patients with SCC) in Study 1005. Partial responses were observed in 20 of 45 patients with non-adenocarcinoma NSCLC for an ORR of 44%, and 9 of 22 patients with SCC NSCLC for an ORR of 41%, both of which were less than the ORR reported in Study 1005 (54%) for all patients.

Re-treatment with crizotinib

No safety and efficacy data are available on re-treatment with crizotinib of patients who received crizotinib in previous lines of therapy.

Elderly

Of 171 ALK-positive NSCLC patients treated with crizotinib in randomised Phase 3 Study 1014, 22 (13%) were 65 years or older, and of 109 ALK-positive patients treated with crizotinib who crossed over from chemotherapy arm, 26 (24%) were 65 years or older.2). Of the 53 ROS1-positive NSCLC patients in single arm Study 1001, 15 (28%) were 65 years or older. There were no ROS1-positive patients >85 years old in Study 1001.

Paediatric population

Absorption

Following oral single dose administration in the fasted state, crizotinib is absorbed with median time to achieve peak concentrations of 4 to 6 hours. With twice daily dosing, steady state was achieved within 15 days. The absolute bioavailability of crizotinib was determined to be 43% following the administration of a single 250 mg oral dose.

A high-fat meal reduced crizotinib AUC_inf and C_max by approximately 14% when a 250 mg single dose was given to healthy volunteers. Crizotinib can be administered with or without food.

Distribution

The geometric mean volume of distribution (Vss) of crizotinib was 1772 L following intravenous administration of a 50 mg dose, indicating extensive distribution into tissues from the plasma.

Binding of crizotinib to human plasma proteins in vitro is 91% and is independent of medicinal product concentration. In vitro studies suggest that crizotinib is a substrate for P-glycoprotein (P-gp).

Biotransformation

In vitro studies demonstrated that CYP3A4/5 were the major enzymes involved in the metabolic clearance of crizotinib. The primary metabolic pathways in humans were oxidation of the piperidine ring to crizotinib lactam and O-dealkylation, with subsequent Phase 2 conjugation of O-dealkylated metabolites.

In vitro studies in human liver microsomes demonstrated that crizotinib is a time-dependent inhibitor of CYP2B6 and CYP3A. In vitro studies indicated that clinical drug-drug interactions are unlikely to occur as a result of crizotinib-mediated inhibition of the metabolism of medicinal products that are substrates for CYP1A2, CYP2C8, CYP2C9, CYP2C19 or CYP2D6.

In vitro studies showed that crizotinib is a weak inhibitor of UGT1A1 and UGT2B7. However, in vitro studies indicated that clinical drug-drug interactions are unlikely to occur as a result of crizotinib-mediated inhibition of the metabolism of drugs that are substrates for UGT1A4, UGT1A6, or UGT1A9.

In vitro studies in human hepatocytes indicated that clinical drug-drug interactions are unlikely to occur as a result of crizotinib-mediated induction of the metabolism of medicinal products that are substrates for CYP1A2.

Elimination

Following single doses of crizotinib, the apparent plasma terminal half-life of crizotinib was 42 hours in patients.

Following the administration of a single 250 mg radiolabeled crizotinib dose to healthy subjects, 63% and 22% of the administered dose was recovered in faeces and urine, respectively. Unchanged crizotinib represented approximately 53% and 2.3% of the administered dose in faeces and urine, respectively.

Coadministration with medicinal products that are substrates of transporters

Crizotinib is an inhibitor of P-glycoprotein (P-gp) in vitro. Therefore, crizotinib may have the potential to increase plasma concentrations of coadministered medicinal products that are substrates of P-gp.

Crizotinib is an inhibitor of OCT1 and OCT2 in vitro. Therefore, crizotinib may have the potential to increase plasma concentrations of coadministered drugs that are substrates of OCT1 or OCT2.

In vitro, crizotinib did not inhibit the human hepatic uptake transport proteins organic anion transporting polypeptide (OATP)1B1 or OATP1B3 or the renal uptake transport proteins organic anion transporter (OAT)1 or OAT3 at clinically relevant concentrations. Therefore, clinical drug-drug interactions are unlikely to occur as a result of crizotinib-mediated inhibition of the hepatic or renal uptake of medicinal products that are substrates for these transporters.

Effect on other transport proteins

In vitro, crizotinib is not an inhibitor of BSEP at clinically relevant concentrations.

Pharmacokinetics in special patient groups

Hepatic Impairment

Crizotinib is extensively metabolized in the liver. Patients with mild (either AST >ULN and total bilirubin ≤ULN or any AST and total bilirubin >ULN but ≤1.5×ULN), moderate (any AST and total bilirubin >1.5×ULN and ≤3×ULN), or severe (any AST and total bilirubin >3×ULN) hepatic impairment or normal (AST and total bilirubin ≤ULN) hepatic function, who were matched controls for mild or moderate hepatic impairment, were enrolled in an open-label, non-randomised clinical study (Study 1012), based on NCI classification.

Following crizotinib 250 mg twice daily dosing, patients with mild hepatic impairment (N=10) showed similar systemic crizotinib exposure at steady state compared to patients with normal hepatic function (N=8), with geometric mean ratios for area under the plasma concentration-time curve as daily exposure at steady state (AUC_daily) and C_max of 91.1% and 91.2%, respectively. No starting dose adjustment is recommended for patients with mild hepatic impairment.

Following crizotinib 200 mg twice daily dosing, patients with moderate hepatic impairment (N=8) showed higher systemic crizotinib exposure compared to patients with normal hepatic function (N=9) at the same dose level, with geometric mean ratios for AUC_daily and C_max of 150% and 144%, respectively. However, the systemic crizotinib exposure in patients with moderate hepatic impairment at the dose of 200 mg twice daily was comparable to that observed from patients with normal hepatic function at a dose of 250 mg twice daily, with geometric mean ratios for AUC_daily and C_max of 114% and 109%, respectively.

The systemic crizotinib exposure parameters AUC_daily and C_max in patients with severe hepatic impairment (N=6) receiving a crizotinib dose of 250 mg once daily were approximately 64.7% and 72.6%, respectively, of those from patients with normal hepatic function receiving a dose of 250 mg twice daily.

An adjustment of the dose of crizotinib is recommended when administering crizotinib to patients with moderate or severe hepatic impairment.

Renal Impairment

Patients with mild (60≤ CL_cr <90 mL/min) and moderate (30≤ CL_cr <60 mL/min) renal impairment were enrolled in single-arm Studies 1001 and 1005. The effect of renal function as measured by baseline CL_cr on observed crizotinib steady-state trough concentrations (C_{trough, ss}) was evaluated. In Study 1001, the adjusted geometric mean of plasma C_{trough, ss} in mild (N=35) and moderate (N=8) renal impairment patients were 5.1% and 11% higher, respectively, than those in patients with normal renal function. In Study 1005, the adjusted geometric mean C_{trough, ss} of crizotinib in mild (N=191) and moderate (N=65) renal impairment groups were 9.1% and 15% higher, respectively, than those in patients with normal renal function. In addition, the population pharmacokinetic analysis using data from Studies 1001, 1005 and 1007 indicated CL_cr did not have a clinically meaningful effect on the pharmacokinetics of crizotinib. Due to the small size of the increases in crizotinib exposure (5%-15%), no starting dose adjustment is recommended for patients with mild or moderate renal impairment.

After a single 250 mg dose in subjects with severe renal impairment (CL_cr <30 mL/min) not requiring peritoneal dialysis or haemodialysis, crizotinib AUC_inf and C_max increased by 79% and 34%, respectively, compared to those with normal renal function. An adjustment of the dose of crizotinib is recommended when administering crizotinib to patients with severe renal impairment not requiring peritoneal dialysis or haemodialysis.

Age

Based on the population pharmacokinetic analysis of data from Studies 1001, 1005, and 1007, age has no effect on crizotinib pharmacokinetics.

Body Weight and Gender

Based on the population pharmacokinetic analysis of data from Studies 1001, 1005 and 1007, there was no clinically meaningful effect of body weight or gender on crizotinib pharmacokinetics.

Ethnicity

Based on the population pharmacokinetic analysis of data from Studies 1001, 1005 and 1007, the predicted area under the plasma concentration-time curve at steady-state (AUC_ss) (95% CI) was 23%-37% higher in Asian patients (N=523) than in non-Asian patients (N=691).

In studies in patients with ALK-positive advanced NSCLC (N=1669), the following adverse reactions were reported with an absolute difference of >10% in Asian patients (N=753) than in non-Asian patients (N=916): elevated transaminases, decreased appetite, neutropenia, and leukopenia. No adverse drug reactions were reported with an absolute difference of >15%.

Geriatric

Limited data are available in this subgroup of patients. Based on the population pharmacokinetic analysis of data in Studies 1001, 1005 and 1007, age has no effect on crizotinib pharmacokinetics.

Cardiac electrophysiology

The QT interval prolongation potential of crizotinib was assessed in patients with either ALK-positive or ROS1-positive NSCLC who received crizotinib 250 mg twice daily. Serial ECGs in triplicate were collected following a single dose and at steady state to evaluate the effect of crizotinib on QT intervals. Thirty-four of 1619 patients (2.1%) with at least 1 postbaseline ECG assessment were found to have QTcF >500 msec, and 79 of 1585 patients (5.0%) with a baseline and at least 1 postbaseline ECG assessment had an increase from baseline QTcF >60 msec by automated machine-read evaluation of ECG.

An ECG substudy using blinded manual ECG measurements was conducted in 52 ALK-positive NSCLC patients who received crizotinib 250 mg twice daily. Eleven (21%) patients had an increase from Baseline in QTcF value >30 to <60 msec and 1 (2%) patient had an increase from Baseline in QTcF value of >60 msec. No patients had a maximum QTcF >480 msec. The central tendency analysis indicated that all upper limits of the 90% CI for the LS mean change from Baseline in QTcF at all Cycle 2 Day 1 time points were <20 msec. A pharmacokinetic/pharmacodynamic analysis suggested a relationship between crizotinib plasma concentration and QTc. In addition, a decrease in heart rate was found to be associated with increasing crizotinib plasma concentration , with a maximum mean reduction of 17.8 beats per minute (bpm) after 8 hours on Cycle 2 Day 1.

In rat and dog repeat-dose toxicity studies up to 3-month duration, the primary target organ effects were related to the gastrointestinal (emesis, faecal changes, congestion), haematopoietic (bone marrow hypocellularity), cardiovascular (mixed ion channel blocker, decreased heart rate and blood pressure, increased LVEDP, QRS and PR intervals, and decreased myocardial contractility), or reproductive (testicular pachytene spermatocyte degeneration, single-cell necrosis of ovarian follicles) systems. The No Observed Adverse Effect Levels (NOAEL) for these findings were either subtherapeutic or up to 2.6-fold human clinical exposure based on AUC. Other findings included an effect on the liver (elevation of liver transaminases) and retinal function, and potential for phospholipidosis in multiple organs without correlative toxicities.

Crizotinib was not mutagenic in vitro in the bacterial reverse mutation (Ames) assay. Crizotinib was aneugenic in an in vitro micronucleus assay in Chinese Hamster Ovary cells and in an in vitro human lymphocyte chromosome aberration assay. Small increases of structural chromosomal aberrations at cytotoxic concentrations were seen in human lymphocytes. The NOAEL for aneugenicity was approximately 1.8-fold human clinical exposure based on AUC.

Carcinogenicity studies with crizotinib have not been performed.

No specific studies with crizotinib have been conducted in animals to evaluate the effect on fertility; however, crizotinib is considered to have the potential to impair reproductive function and fertility in humans based on findings in repeat-dose toxicity studies in the rat. Findings observed in the male reproductive tract included testicular pachytene spermatocyte degeneration in rats given >50 mg/kg/day for 28 days (approximately 1.1-fold human clinical exposure based on AUC). Findings observed in the female reproductive tract included single-cell necrosis of ovarian follicles of a rat given 500 mg/kg/day for 3 days.

Crizotinib was not shown to be teratogenic in pregnant rats or rabbits. Post-implantation loss was increased at doses >50 mg/kg/day (approximately 0.4 times the AUC at the recommended human dose) in rats, and reduced fetal body weights were considered adverse effects in the rat and rabbit at 200 and 60 mg/kg/day, respectively (approximately 1.2-fold human clinical exposure based on AUC).

Decreased bone formation in growing long bones was observed in immature rats at 150 mg/kg/day following once daily dosing for 28 days (approximately 3.3 times human clinical exposure based on AUC). Other toxicities of potential concern to paediatric patients have not been evaluated in juvenile animals.

The results of an in vitro phototoxicity study demonstrated that crizotinib may have phototoxic potential.

Not applicable.

Any unused product or waste material should be disposed of in accordance with local requirements.