Pemetrexed (Alimta)

Pemetrexed is a chemotherapy drug that blocks several enzymes cancer cells need to make DNA, slowing or stopping their growth. It is a cornerstone treatment for pleural mesothelioma and is almost always given in combination with another drug, usually cisplatin or carboplatin. It is delivered by intravenous infusion, typically every 21 days.

Origin

Pemetrexed was developed by Eli Lilly in the 1990s and approved by the FDA in 2004, specifically for malignant pleural mesothelioma in patients whose tumors could not be surgically removed. This was the first chemotherapy drug ever approved by the FDA for mesothelioma, based on the landmark Vogelzang trial showing improved survival when added to cisplatin.

Significance in Asbestos Context

For most patients with pleural mesothelioma, pemetrexed plus a platinum drug (cisplatin or carboplatin) has been the standard first-line chemotherapy for two decades and remains a core treatment option, often now combined with or compared against immunotherapy regimens like nivolumab plus ipilimumab. Documentation of pemetrexed treatment (including dates, cycles, response, side effects, and quality-of-life impacts) becomes important medical evidence in an asbestos claim, both to confirm the mesothelioma diagnosis and to support damages related to the burden of treatment. Patients should know that response to pemetrexed varies by mesothelioma subtype (epithelioid tends to respond better than sarcomatoid or biphasic), and that newer treatments may be offered instead of or after pemetrexed depending on the case.

Example Sentence

"After her pleural mesothelioma diagnosis, Maria began six cycles of pemetrexed and carboplatin, and her oncologist tracked tumor response with CT scans every two cycles."

Related Terms

Cisplatin, Mesothelioma, Chemotherapy, Immunotherapy, Epithelioid Mesothelioma, Antifolate

Notes

• Ask your oncology team whether pemetrexed plus platinum, immunotherapy (nivolumab/ipilimumab), or a combination is most appropriate for your specific mesothelioma subtype and overall health.
• You must take daily folic acid (started about a week before treatment) and a vitamin B12 injection every 9 weeks to reduce serious side effects. Confirm your prescriptions before the first infusion.
• Keep a treatment diary recording every infusion date, dose, side effects (fatigue, nausea, low blood counts, mouth sores, rash), and any hospitalizations; this record supports both clinical decisions and any legal claim for damages.
• Request copies of your chemotherapy administration records, pathology report, and imaging reports. Your legal team will need these to document diagnosis, treatment burden, and prognosis.
• Ask whether you are eligible for a clinical trial; mesothelioma treatment is evolving rapidly and trials may offer access to newer combinations.