Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0854467 (myelosuppression)
5,932 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Pemetrexed is a novel antifolate/antimetabolite that inhibits several folate-dependent enzymes, including thymidylate synthase, dihydrofolate reductase, and glycinamide ribonucleotide transformylase. As a class, antifolates have been associated with sporadic severe myelosuppression with gastrointestinal toxicity. Although infrequent, a combination of such toxicities carries a high risk of potentially life-threatening complications. Severe toxicity from pemetrexed-based therapy has become more predictable using the vitamin deficiency marker homocysteine and, to a lesser extent, methylmalonic acid. Evidence now suggests that reducing total plasma homocysteine levels by supplementation with folic acid and vitamin B(12) leads to a better safety profile for pemetrexed, while not adversely affecting its efficacy.
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PMID:Pemetrexed safety and dosing strategy. 1257 7