PEMAZYRE

Indications and Usage, Myeloid/Lymphoid Neoplasms with FGFR1 Rearrangement ( 1.2 ) 8/2022 Dosage and Administration, Recommended Dosage ( 2.2 ) 8/2022 Warnings and Precautions, Ocular Toxicity ( 5.1 ) 8/2022 Warnings and Precautions, Hyperphosphatemia and Soft Tissue Mineralization ( 5.2 ) 8/2022

1 INDICATIONS AND USAGE PEMAZYRE is a kinase inhibitor indicated: for the treatment of adults with previously treated, unresectable locally advanced or metastatic cholangiocarcinoma with a fibroblast growth factor receptor 2 (FGFR2) fusion or other rearrangement as detected by an FDA-approved test. ( 1 , 2.1 ) This indication is approved under accelerated approval based on overall response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s). ( 1 , 2.1 ) For the treatment of adults with relapsed or refractory myeloid/lymphoid neoplasms (MLNs) with FGFR1 rearrangement. ( 1 , 2.1 ) 1.1 Cholangiocarcinoma PEMAZYRE is indicated for the treatment of adults with previously treated, unresectable locally advanced or metastatic cholangiocarcinoma with a fibroblast growth factor receptor 2 (FGFR2) fusion or other rearrangement as detected by an FDA-approved test [see Dosage and Administration ( 2.1 )] . This indication is approved under accelerated approval based on overall response rate and duration of response [see Clinical Studies ( 14.1 )]. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s). 1.2 Myeloid/Lymphoid Neoplasms with FGFR1 Rearrangement PEMAZYRE is indicated for the treatment of adults with relapsed or refractory myeloid/lymphoid neoplasms (MLNs) with fibroblast growth factor receptor 1 (FGFR1) rearrangement.

2 DOSAGE AND ADMINISTRATION Cholangiocarcinoma: Confirm the presence of an FGFR2 fusion or rearrangement prior to initiation of treatment with PEMAZYRE. ( 2.1 ) Recommended dosage is 13.5 mg orally once daily for 14 consecutive days followed by 7 days off therapy in 21-day cycles. Continue treatment until disease progression or unacceptable toxicity occurs. ( 2.2 ) Myeloid/lymphoid neoplasms with FGFR1 rearrangement: Recommended dosage is 13.5 mg orally once daily. Continue treatment until disease progression or unacceptable toxicity. ( 2.2 ) All patients treated with PEMAZYRE: Swallow tablet whole, with or without food. ( 2.2 ) Severe Renal Impairment: the recommended dosage of PEMAZYRE is 9 mg with the schedule (intermittent or continuous) designated for the indication. ( 2.5 , 8.6 , 12.3 ) Severe Hepatic Impairment: the recommended dosage of PEMAZYRE is 9 mg with the schedule (intermittent or continuous) designated for the indication. ( 2.6 , 8.7 , 12.3 ) 2.1 Patient Selection Select patients for the treatment of locally advanced or metastatic cholangiocarcinoma with PEMAZYRE based on the presence of an FGFR2 fusion or rearrangement as detected by an FDA-approved test [see Clinical Studies ( 14.1 )]. Information on FDA-approved test(s) for the detection of an FGFR2 fusion or rearrangement in cholangiocarcinoma is available at http://www.fda.gov/CompanionDiagnostics . Select patients for the treatment of relapsed or refractory myeloid/lymphoid neoplasms with FGFR1 rearrangement with PEMAZYRE based on the presence of an FGFR1 rearrangement [see Clinical Studies ( 14.2 )] . An FDA-approved test for detection of FGFR1 rearrangement in patients with relapsed or refractory myeloid/lymphoid neoplasm for selecting patients for treatment with PEMAZYRE is not available. 2.2 Recommended Dosage Take PEMAZYRE with or without food at approximately the same time every day [see Clinical Pharmacology ( 12.3 )] . Swallow tablets whole. Do not crush, chew, split, or dissolve tablets. If the patient misses a dose of PEMAZYRE by 4 or more hours or if vomiting occurs, resume dosing with the next scheduled dose. Cholangiocarcinoma The recommended dosage of PEMAZYRE is 13.5 mg orally once daily for 14 consecutive days followed by 7 days off therapy, in 21-day cycles. Continue treatment until disease progression or unacceptable toxicity occurs. Myeloid/Lymphoid Neoplasms with FGFR1 Rearrangement The recommended dosage of PEMAZYRE is 13.5 mg orally once daily on a continuous basis. Continue treatment until disease progression or unacceptable toxicity occurs. 2.3 Dosage Modification for Adverse Reactions The recommended dose reductions for adverse reactions are provided in Table 1. Table 1: Recommended Dose Reductions for PEMAZYRE for Adverse Reactions Dose Reduction Recommended Dosage Cholangiocarcinoma with FGFR2 Fusion or Rearrangement MLNs with FGFR1 Rearrangement First 9 mg once daily for first 14 days of each 21-day cycle 9 mg once daily Second 4.5 mg once daily for first 14 days of each 21-day cycle 4.5 mg once daily Third Discontinue 4.5 mg once daily for first 14 days of each 21-day cycle Permanently discontinue PEMAZYRE if unable to tolerate 4.5 mg once daily for 14 days of each 21-day cycle. The recommended dosage modifications for adverse reactions are provided in Table 2. Table 2: Recommended Dosage Modifications for PEMAZYRE Adverse Reactions Adverse Reaction Severity Severity as defined by National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 4.03. PEMAZYRE Dosage Modification Retinal Pigment Epithelial Detachment (RPED) [see Warnings and Precautions ( 5.1 )] RPED If asymptomatic and stable on serial examination, continue PEMAZYRE. If symptomatic or worsening on serial examination, withhold PEMAZYRE. If asymptomatic and improved on subsequent examination, resume PEMAZYRE at a lower dose If symptoms persist or examination does not improve, consider permanent discontinuation of PEMAZYRE, based on cl …

3 DOSAGE FORMS AND STRENGTHS Tablets: 4.5 mg: round, white to off-white tablet debossed on one side with "I" and "4.5" on the other side. 9 mg: oval, white to off-white tablet debossed on one side with "I" and "9" on the other side. 13.5 mg: round, white to off-white tablet debossed on one side with "I" and "13.5" on the other side. Tablets: 4.5 mg, 9 mg, and 13.5 mg. ( 3 )

4 CONTRAINDICATIONS None. None. ( 4 )

6 ADVERSE REACTIONS The following adverse reactions are discussed elsewhere in the labeling: Ocular Toxicity [see Warnings and Precautions ( 5.1 )] Hyperphosphatemia and Soft Tissue Mineralization [see Warnings and Precautions ( 5.2 )] Cholangiocarcinoma: The most common adverse reactions (incidence ≥ 20%) are hyperphosphatemia, alopecia, diarrhea, nail toxicity, fatigue, dysgeusia, nausea, constipation, stomatitis, dry eye, dry mouth, decreased appetite, vomiting, arthralgia, abdominal pain, hypophosphatemia, back pain, and dry skin. ( 6.1 ) Myeloid/lymphoid neoplasms with FGFR1 rearrangement: The most common (≥ 20%) adverse reactions are hyperphosphatemia, nail toxicity, alopecia, stomatitis, diarrhea, dry eye, fatigue, rash, abdominal pain, anemia, constipation, dry mouth, epistaxis, serous retinal detachment, extremity pain, decreased appetite, dry skin, dyspepsia, back pain, nausea, blurred vision, peripheral edema, and dizziness. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Incyte Corporation at 1-855-463-3463 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The pooled safety population described in the WARNINGS AND PRECAUTIONS section reflects exposure to PEMAZYRE at a starting dose of 13.5 mg orally once daily (intermittent or continuous administration) in 635 patients with advanced malignancies. Among the 635 patients, 31% were exposed for 6 months or longer and 11% were exposed greater than one year, including patients with previously treated, advanced, or metastatic cholangiocarcinoma in FIGHT-202 and patients with MLNs with FGFR1 rearrangement in FIGHT-203. Cholangiocarcinoma FIGHT-202 The safety of PEMAZYRE was evaluated in FIGHT-202, which included 146 patients with previously treated, locally advanced or metastatic cholangiocarcinoma [see Clinical Studies ( 14.1 )]. Patients were treated orally with PEMAZYRE 13.5 mg once daily for 14 days on followed by 7 days off therapy until disease progression or unacceptable toxicity. The median duration of treatment was 181 days (range: 7 to 730 days). The median age of PEMAZYRE-treated patients was 59 years (range 26-78), 58% were females, and 71% were White. Serious adverse reactions occurred in 45% of patients receiving PEMAZYRE. Serious adverse reactions in ≥ 2% of patients who received PEMAZYRE included abdominal pain, pyrexia, cholangitis, pleural effusion, acute kidney injury, cholangitis infective, failure to thrive, hypercalcemia, hyponatremia, small intestinal obstruction, and urinary tract infection. Fatal adverse reactions occurred in 4.1% of patients, including failure to thrive, bile duct obstruction, cholangitis, sepsis, and pleural effusion. Permanent discontinuation due to an adverse reaction occurred in 9% of patients who received PEMAZYRE. Adverse reactions requiring permanent discontinuation in ≥ 1% of patients included intestinal obstruction and acute kidney injury. Dosage interruptions due to an adverse reaction occurred in 43% of patients who received PEMAZYRE. Adverse reactions requiring dosage interruption in ≥ 1% of patients included stomatitis, palmar-plantar erythrodysesthesia syndrome, arthralgia, fatigue, abdominal pain, AST increased, asthenia, pyrexia, ALT increased, cholangitis, small intestinal obstruction, alkaline phosphatase increased, diarrhea, hyperbilirubinemia, electrocardiogram QT prolonged, decreased appetite, dehydration, hypercalcemia, hyperphosphatemia, hypophosphatemia, back pain, pain in extremity, syncope, acute kidney injury, onychomadesis, and hypotension. Dose reductions due to an adverse reaction occurred in 14% of patients who received PEMAZYRE. Adverse reactions requiring dosage reductions in ≥ 1% of patients who rece …

7 DRUG INTERACTIONS Strong and Moderate CYP3A Inducers: Avoid concomitant use of PEMAZYRE. ( 7.1 ) Strong and Moderate CYP3A Inhibitors: Avoid concomitant use. If concomitant use cannot be avoided, reduce PEMAZYRE dosage. ( 2.4 , 7.1 ) 7.1 Effect of Other Drugs on PEMAZYRE Strong and Moderate CYP3A Inducers Concomitant use of PEMAZYRE with a strong or moderate CYP3A inducer decreases pemigatinib plasma concentrations [ see Clinical Pharmacology ( 12.3 )], which may reduce the efficacy of PEMAZYRE. Avoid concomitant use of strong and moderate CYP3A inducers with PEMAZYRE. Strong and Moderate CYP3A Inhibitors Concomitant use of a strong or moderate CYP3A inhibitor with PEMAZYRE increases pemigatinib plasma concentrations [see Clinical Pharmacology ( 12.3 )], which may increase the incidence and severity of adverse reactions. Avoid concomitant use of strong and moderate CYP3A inhibitors with PEMAZYRE. Reduce PEMAZYRE dosage if concomitant use of strong and moderate CYP3A inhibitors cannot be avoided [see Dosage and Administration ( 2.4 )] .

8 USE IN SPECIFIC POPULATIONS Lactation: Advise not to breastfeed. ( 8.2 ) 8.1 Pregnancy Risk Summary Based on findings in an animal study and its mechanism of action, PEMAZYRE can cause fetal harm or loss of pregnancy when administered to a pregnant woman [see Clinical Pharmacology ( 12.1 )] . There are no available data on the use of PEMAZYRE in pregnant women. Oral administration of pemigatinib to pregnant rats during the period of organogenesis at maternal plasma exposures below the human exposure at the clinical dose of 13.5 mg resulted in fetal malformations, fetal growth retardation, and embryo-fetal death (see Data) . Advise pregnant women of the potential risk to a fetus. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Animal Data Once daily oral administration of pemigatinib to pregnant rats during the period of organogenesis resulted in 100% embryofetal mortality due to post-implantation loss at doses ≥ 0.3 mg/kg (approximately 0.6 times the human exposure based on AUC at the clinical dose of 13.5 mg). Fetal survival was unaffected at 0.1 mg/kg per day; however, once daily oral administration of pemigatinib at the 0.1 mg/kg dose level (approximately 0.2 times the human exposure based on AUC at the clinical dose of 13.5 mg) resulted in reduced mean fetal body weight and an increase in fetal skeletal and visceral malformations, major blood vessel variations, and reduced ossification. 8.2 Lactation Risk Summary There are no data on the presence of pemigatinib or its metabolites in human milk or their effects on either the breastfed child or on milk production. Because of the potential for serious adverse reactions in breastfed children from PEMAZYRE, advise women not to breastfeed during treatment and for 1 week after the last dose. 8.3 Females and Males of Reproductive Potential PEMAZYRE can cause fetal harm when administered to pregnant women [see Use in Specific Populations ( 8.1 )] . Pregnancy Testing Verify pregnancy status of females of reproductive potential prior to initiating PEMAZYRE [see Use in Specific Populations ( 8.1 )] . Contraception Females Advise females of reproductive potential to use effective contraception during treatment with PEMAZYRE and for 1 week after the last dose. Males Advise males with female partners of reproductive potential to use effective contraception during treatment with PEMAZYRE and for 1 week after the last dose. 8.4 Pediatric Use The safety and effectiveness of PEMAZYRE have not been established in pediatric patients. Animal Toxicity Data In 4- or 13-week repeat-dose toxicology studies in rats and non-human primates, animals displayed toxicities in bone and teeth at pemigatinib exposures lower than the human exposure at the clinical dose of 13.5 mg. Physeal and cartilage dysplasia were present in multiple bones in both species, and tooth (incisor) abnormalities (complete loss of ameloblasts with associated secondary changes) occurred in rats. Six weeks after cessation of dosing, these findings did not show complete evidence of recovery, and additional tooth-related findings (mal-aligned, whitened, broken, and trimmed/thinned incisors) developed in the 13-week study. 8.5 Geriatric Use In FIGHT-202 in patients with cholangiocarcinoma, 32% of patients were 65 years and older, and 8% of patients were 75 years and older. In FIGHT-203 in patients with MLN with FGFR1 rearrangement, 44% of patients were 65 years and older, and 2.9% of patients were 75 years and older. No overall differences in safety or effectiveness were observed between these patients and younger patients. 8.6 Renal Impairment Reduce the recommended dosage of PEMAZYRE for patients with severe renal impairment (eGFR 15 to 29 mL/min/1.73 m 2 , estimated by MDRD equation) [see Dosage and Administration ( 2.5 ) and Clinical Pharmacology ( 12.3 )] . No dosage adjustment is recommended …

12.1 Mechanism of Action Pemigatinib is a small molecule kinase inhibitor that targets FGFR1, 2 and 3 with IC 50 values of less than 2 nM. Pemigatinib also inhibited FGFR4 in vitro at a concentration approximately 100 times higher than those that inhibit FGFR1, 2, and 3. Pemigatinib inhibited FGFR1-3 phosphorylation and signaling and decreased cell viability in cancer cell lines with activating FGFR amplifications and fusions that resulted in constitutive activation of FGFR signaling. Constitutive FGFR signaling can support the proliferation and survival of malignant cells. Pemigatinib exhibited anti-tumor activity in mouse xenograft models of human tumors with FGFR1, FGFR2, or FGFR3 alterations resulting in constitutive FGFR activation including a patient-derived xenograft model of cholangiocarcinoma that expressed an oncogenic FGFR2-Transformer-2 beta homolog (TRA2b) fusion protein and the KG1 leukemia model that carries a translocation of FGFR1 (FGFR1OP2-FGFR1).

11 DESCRIPTION Pemigatinib is a kinase inhibitor with the chemical name 3-(2,6-difluoro-3,5-dimethoxyphenyl)-1-ethyl-8-(morpholin-4-ylmethyl)-1,3,4,7-tetrahydro-2 H -pyrrolo[3',2':5,6]pyrido[4,3- d ]pyrimidin-2-one. Pemigatinib has a molecular formula of C 24 H 27 F 2 N 5 O 4 and molecular mass of 487.5 g/mole. Pemigatinib has the following chemical structure: Pemigatinib is a white to off-white solid that is not hygroscopic. The solubility of pemigatinib is pH dependent with decreasing solubility observed with increasing pH. PEMAZYRE tablets are uncoated and for oral administration. Tablets are available containing 4.5 mg, 9 mg, or 13.5 mg of pemigatinib active ingredient. The inactive ingredients include magnesium stearate, microcrystalline cellulose, and sodium starch glycolate. Chemical Structure

16 HOW SUPPLIED/STORAGE AND HANDLING PEMAZYRE tablets are available as follows: 4.5 mg: Round, white to off-white debossed on one side with “I” and “4.5” on the other side in bottles of 14 with child-resistant closure, NDC 50881-026-01 9 mg: Oval, white to off-white debossed on one side with “I” and “9” on the other side in bottles of 14 with child-resistant closure, NDC 50881-027-01 13.5 mg: Round, white to off-white debossed on one side with “I” and “13.5” on the other side in bottles of 14 with child-resistant closure, NDC 50881-028-01 Store PEMAZYRE tablets at room temperature 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F).