Maintenance Treatment Following First-line Non-Pemetrexed for Injection Containing Platinum-Based Chemotherapy
In Study JMEN, the safety of Pemetrexed for Injection was evaluated in a randomized (2:1), placebo-controlled, multicenter trial conducted in patients with non-progressive locally advanced or metastatic NSCLC following four cycles of a first-line, platinum-based chemotherapy regimen. Patients received either Pemetrexed for Injection 500 mg/m 2 or matching placebo intravenously every 21 days until disease progression or unacceptable toxicity. Patients in both study arms were fully supplemented with folic acid and vitamin B 12 .
Study JMEN excluded patients with an ECOG PS of 2 or greater, uncontrolled third-space fluid retention, inadequate bone marrow reserve and organ function, or a calculated creatinine clearance less than 45 mL/min. Patients unable to stop using aspirin or other non-steroidal anti-inflammatory drugs or unable to take folic acid, vitamin B 12 or corticosteroids were also excluded from the study.
The data described below reflect exposure to Pemetrexed for Injection in 438 patients in Study JMEN. Median age was 61 years (range 26-83 years), 73% of patients were men; 65% were White, 31% were Asian, 2.9% were Hispanic or Latino, and <2% were other ethnicities; 39% had an ECOG PS 0. Patients received a median of 5 cycles of Pemetrexed for Injection and a relative dose intensity of Pemetrexed for Injection of 96%. Approximately half the patients (48%) completed at least six, 21-day cycles and 23% completed ten or more 21-day cycles of Pemetrexed for Injection.
Table 5 provides the frequency and severity of adverse reactions reported in ≥5% of the 438 Pemetrexed for Injection-treated patients in Study JMEN.
Table 5: Adverse Reactions Occurring in ≥5% of Patients Receiving Pemetrexed for Injection in Study JMEN| Adverse Reactionª | Pemetrexed for Injection (N=438) | Placebo (N=218) |
|---|
| All Grades (%) | Grade 3-4 (%) | All Grades (%) | Grade 3-4 (%) |
|---|
a NCI CTCAE version 3.0 |
All adverse reactions | 66 | 16 | 37 | 4 |
Laboratory |
Hematologic |
Anemia | 15 | 3 | 6 | 1 |
Neutropenia | 6 | 3 | 0 | 0 |
Hepatic |
Increased ALT | 10 | 0 | 4 | 0 |
Increased AST | 8 | 0 | 4 | 0 |
Clinical |
Constitutional symptoms |
Fatigue | 25 | 5 | 11 | 1 |
Gastrointestinal |
Nausea | 19 | 1 | 6 | 1 |
Anorexia | 19 | 2 | 5 | 0 |
Vomiting | 9 | 0 | 1 | 0 |
Mucositis/stomatitis | 7 | 1 | 2 | 0 |
Diarrhea | 5 | 1 | 3 | 0 |
Infection | 5 | 2 | 2 | 0 |
Neurology |
Sensory neuropathy | 9 | 1 | 4 | 0 |
Dermatology/Skin |
Rash/desquamation | 10 | 0 | 3 | 0 |
The requirement for transfusions (9.5% versus 3.2%), primarily red blood cell transfusions, and for erythropoiesis stimulating agents (5.9% versus 1.8%) were higher in the Pemetrexed for Injection arm compared to the placebo arm.
The following additional adverse reactions were observed in patients who received Pemetrexed for Injection.
Incidence 1% to <5%
Dermatology/Skin — alopecia, pruritus/itching
Gastrointestinal — constipation
General Disorders — edema, fever
Hematologic — thrombocytopenia
Eye Disorder — ocular surface disease (including conjunctivitis), increased lacrimation
Incidence <1%
Cardiovascular — supraventricular arrhythmia
Dermatology/Skin — erythema multiforme
General Disorders — febrile neutropenia, allergic reaction/hypersensitivity
Neurology — motor neuropathy
Renal — renal failure