a study of lorlatinib in alk inhibitor-treated alk-positive nsclc in china

Conditions: Carcinoma, Non-Small-Cell Lung

Summary: a phase 2, multi center, open label, dual cohort study to evaluate the efficacy and safety of lorlatinib (pf 06463922) monotherapy in alk inhibitor treated locally advanced or metastatic alk positive non small cell lung cancer patients in china

this is a phase 2, china only, multi center, open label, dual cohort study, in alk positive locally advanced or metastatic nsclc patients will be enrolled to receive lorlatinib monotherapy. * (in cohort 1) disease progression after crizotinib as the only alk inhibitor. * (in cohort 2) disease progression after one alk inhibitor other than crizotinib.

Eligibility criteria:
inclusion criteria: 1. evidence of histologically or cytologically confirmed diagnosis of locally advanced or metastatic alk positive nsclc where alk status has been previously established by the ventana alk (d5f3) cdx assay (roche diagnostics), the vysis alk break apart fish probe kit (abbott molecular), or the eml4 alk fusion gene detection kit (amoydx). 2. subject should have: 1. (in cohort 1) disease progression after crizotinib as the only alk inhibitor; 2. (in cohort 2) disease progression after one alk inhibitor other than crizotinib, with or without prior crizotinib. 3. prior treatment with an alk inhibitor must have completed 5 half lives prior to study entry. 4. all subjects must have at least 1 measurable extracranial target lesion according to recist v1.1 that has not been previously irradiated. cns metastases are allowed if: 1. asymptomatic: either not currently requiring corticosteroid treatment, or on a stable or decreasing dose of 10 mg qd prednisone or equivalent; or 2. previously diagnosed and treatment has been completed with full recovery from the acute effects of radiation therapy or surgery prior to enrollment, and if corticosteroid treatment for these metastases has been withdrawn for at least 4 weeks with neurological stability. 5. eastern cooperative oncology group performance status (ecog ps) 0, 1, or 2. 6. age 18 years (or 20 years as required by local regulation). 7. adequate bone marrow functions: 1. absolute neutrophil count (anc) 1,500/mm3 or 1.5 x 109/l; 2. platelets 100,000/mm3 or 100 x 109/l; 3. hemoglobin 9 g/dl. 8. adequate pancreatic function: 1. serum total amylase 1.5 x upper limit of normal (uln);\* 2. serum lipase 1.5 x uln. \*if total amylase \>1.5 x uln, but pancreatic amylase is within the uln, then subject may be enrolled. 9. adequate renal function: a. serum creatinine 1.5 x uln or estimated creatinine clearance 60 ml/min as calculated using the method standard for the institution. 10. adequate liver function: 1. total serum bilirubin 1.5 x uln; 2. aspartate aminotransferase (ast) and alanine aminotransferase (alt) 2.5 x uln (5.0 x uln in case of liver metastases). 11. acute effects of prior radiotherapy and chemotherapy resolved to baseline severity or to national cancer institute (nci) common terminology criteria for adverse events (ctcae) grade 1 except for aes that in the investigator's judgment do not constitute a safety risk for the subject. 12. serum or urine pregnancy test (for females of childbearing potential) negative at screening. female subjects of non childbearing potential must meet at least 1 of the following criteria: 1. achieved postmenopausal status, defined as follows: cessation of regular menses for at least 12 consecutive months with no alternative pathological or physiological cause (which may be confirmed with a serum follicle stimulating hormone (fsh) level confirming the postmenopausal state if appropriate; 2. have undergone a documented hysterectomy and/or bilateral oophorectomy; 3. have medically confirmed ovarian failure. all other female subjects (including female subjects with tubal ligations) are considered to be of childbearing potential. 13. evidence of a personally signed and dated informed consent document indicating that the subject (or a legally acceptable representative) has been informed of all pertinent aspects of the study. 14. willing and able to comply with the study scheduled visits, treatment plans, laboratory tests, and other procedures. exclusion criteria: subjects with any of the following characteristics/conditions will not be included in the study: 1. more than 1 prior chemotherapy regimen prior to enrollment in advanced/metastatic setting. if disease recurred/relapsed within the adjuvant chemotherapy treatment or \<=6 months after the completion of the adjuvant chemotherapy, then the adjuvant chemotherapy is considered as the first line systemic chemotherapy to the disease. 2. systemic anti cancer therapy completed within a minimum of 5 half lives of study enrollment. 3. prior therapy with an antibody or drug specifically targeting t cell co stimulation or immune checkpoint pathways, including, but not limited to, anti programmed cell death protein 1 (anti pd 1), anti programmed cell death protein ligand 1 (anti pd l1), anti pd l2, anti cluster of differentiation 137 (anti cd137), or anti cytotoxic t lymphocyte associated antigen 4 (anti ctla 4) antibody. 4. known epidermal growth factor receptor (egfr) activating mutations; known prior therapy with egfr tki(s) (the prior treatment with brigatinib is allowed as an alk tki). 5. major surgery within 4 weeks prior to enrollment. minor surgical procedures (eg, port insertion) are not excluded, but sufficient time should have passed for adequate wound healing. 6. radiation therapy within 2 weeks prior to enrollment. palliative radiation must have been completed at least 48 hours prior to enrollment. stereotactic or partial brain irradiation must have completed at least 2 weeks prior to enrollment. whole brain irradiation must have completed at least 4 weeks prior to enrollment. 7. spinal cord compression unless the subject has good pain control attained through therapy, and there is complete recovery of neurological function for the 4 weeks prior to enrollment. 8. gastrointestinal abnormalities, including inability to take oral medication; requirement for intravenous alimentation; prior surgical procedures affecting absorption including total gastric resection or lap band; active inflammatory gastrointestinal disease, chronic diarrhea, symptomatic diverticular disease; treatment for active peptic ulcer disease in the past 6 months; malabsorption syndromes. 9. known prior or suspected severe hypersensitivity to lorlatinib or any component in the formulation; known prior therapy with lorlatinib. 10. active and clinically significant bacterial, fungal, or viral infection including hepatitis b virus (hbv), hepatitis c virus (hcv), known human immunodeficiency virus (hiv) or acquired immunodeficiency syndrome (aids) related illness. 11. clinically significant cardiovascular disease (both arterial and venous) and non vascular cardiac conditions, (active or within 3 months prior to enrollment, which may include, but not are limited to: * arterial disease such as cerebral vascular accident/stroke (including transient ischemic attack -tia), myocardial infarction, unstable angina; * venous diseases such as cerebral venous thrombosis, symptomatic pulmonary embolism; * nonvascular cardiac disease such as congestive heart failure (new york heart association classification class ≥ ii), second degree or third degree atrioventricular block (unless paced) or any av block with pr interval \>220 msec; or * ongoing cardiac dysrhythmias of ctcae grade ≥2, uncontrolled atrial fibrillation of any grade, bradycardia defined as \ 470 msec, or congenital long qt syndrome. 12. subject with predisposing characteristics for acute pancreatitis according to investigator judgment, including but not limited to uncontrolled hyperglycemia, current gallstone disease, in the last month prior to enrollment. 13. history of extensive, disseminated, bilateral or presence of grade 3 or 4 interstitial fibrosis or interstitial lung disease including a history of pneumonitis, hypersensitivity pneumonitis, interstitial pneumonia, interstitial lung disease, obliterative bronchiolitis and pulmonary fibrosis. 14. evidence of active malignancy (other than nsclc, non melanoma skin cancer, or localized and presumed cured prostate cancer or any in situ cancer which does not currently require treatment) within the last 3 years prior to enrollment. 15. concurrent use of any of the following food or drugs (consult the sponsor if in doubt whether a food or a drug falls into any of the above categories) within 12 days prior to the first dose of administration of lorlatinib: 1. known strong cyp3a inhibitors (eg, strong cyp3a inhibitors: grapefruit juice or grapefruit/grapefruit related citrus fruits \[eg, seville oranges, pomelos\], boceprevir, cobicistat, conivaptan, itraconazole, ketoconazole, posaconazole, ritonavir alone and with danoprevir or elvitegravir or indinavir or lopinavir or paritaprevir or ombitasvir or dasabuvir or saquinavir or tipranavir, telaprevir, troleandomycin, and voriconazole). the topical use of these medications (if applicable), such as 2% ketoconazole cream, is allowed; 2. known cyp3a substrates with narrow therapeutic index, such as astemizole\*, terfenadine\*, cisapride\*, pimozide, quinidine, tacrolimus, cyclosporine, sirolimus, alfentanil, fentanyl (including transdermal patch) or ergot alkaloids (ergotamine, dihydroergotamine) (\*withdrawn from us market); 3. known strong cyp3a inducers (eg, carbamazepine, enzalutamide, mitotane, phenytoin, rifampin, st. john's wort); 4. known p glycoprotein (p gp) substrates with a narrow therapeutic index (eg, digoxin). 16. other severe acute or chronic medical or psychiatric condition, including recent (within the past year) or active suicidal ideation or behavior, or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator and/or the sponsor, would make the subject inappropriate for entry into this study. 17. subject who are investigational site staff members directly involved in the conduct of the study and their family members, site staff members otherwise supervised by the investigator, or subjects who are pfizer employees, including their family members, directly involved in the conduct of the study. 18. participation in other studies involving investigational drug(s) within 2 weeks prior to study entry and/or during study participation. 19. pregnant female participants; breastfeeding female participants; fertile male participants and female participants of childbearing potential who are unwilling or unable to use a highly effective method of contraception as outlined in this protocol for the duration of the study and for at least 97 days if male or 35 days if female, after the last dose of investigational product.

Keywords: alk positive alk inhibitor-treated nsclc