pralatrexate pralatrexate pralatrexate, sold under the brand name folotyn, is a medication used for the treatment of relapsed or refractory peripheral t-cell lymphoma (ptcl). pralatrexateclinical datatrade namesfolotynahfs/drugs.commonographlicense data us fda: pralatrexate routes ofadministrationintravenousatc codel01ba05 (who) legal statuslegal status au: s4 (prescription only) ca: ℞-only us: ℞-only identifiers iupac name n-(4-benzoyl)-l-glutamic acid cas number146464-95-1 npubchem cid148121iuphar/bps6840drugbankdb06813 ychemspider130578 yuniia8q8i19q20keggd05589chebichebi:71223 nchemblchembl1201746 ncomptox dashboard (epa)dtxsid3048578 echa infocard100.205.791 chemical and physical dataformulac23h23n7o5molar mass477.481 g·mol−13d model (jsmol)interactive image smiles o=c(o)(nc(=o)c1ccc(cc1)c(cc#c)cc2nc3c(nc2)nc(nc3n)n)ccc(=o)o inchi inchi=1s/c23h23n7o5/c1-2-3-14(10-15-11-26-20-18(27-15)19(24)29-23(25)30-20)12-4-6-13(7-5-12)21(33)28-16(22(34)35)8-9-17(31)32/h1,4-7,11,14,16h,3,8-10h2,(h,28,33)(h,31,32)(h,34,35)(h4,24,25,26,29,30)/t14?,16-/m0/s1 ykey:ogsbukjudhaqea-wmcaagnksa-n y ny (what is this?) (verify) pralatrexate was approved for medical use in the united states in september 2009, as the first treatment for peripheral t-cell lymphoma (ptcl), an often aggressive type of non-hodgkins lymphoma. medical uses pralatrexate is indicated for the treatment of people with relapsed or refractory peripheral t-cell lymphoma (ptcl). mechanism pralatrexate is a dihydrofolate reductase inhibitor. discovery research on this class of drugs began in the 1950s at sri international, where scientists were focused on developing new chemotherapies and antifolates that would be effective against tumor cells. in the late 1970s, researchers at memorial sloan kettering cancer center discovered that cancerous cells take in natural folate through a protein identified as plasma membrane transporter (now referred to as "reduced folate carrier type 1" or "rfc-1"). further research showed that when normal cells evolve into cancerous cells they often overproduce rfc-1 to ensure they get enough folate. a subsequent scientific collaboration was ultimately formed among sri international, memorial sloan kettering cancer center, and the southern research institute with the intention of developing an antifolate with greater therapeutic selectivity – an agent that could be more effectively internalized into tumors (transported into the cells through rfc-1) and would be more toxic to cancer cells than normal cells. this collaboration, supported by the national cancer institute, led to the identification of pralatrexate in the mid-1990s. pralatrexate was later licensed to allos therapeutics in 2002 for further development. allos therapeutics, inc. was acquired by spectrum pharmaceuticals, inc. on september 5, 2012. allos is a wholly owned subsidiary of spectrum. society and culture legal status pralatrexate was approved for medical use in the united states in september 2009. economics some oncologists, patient groups, and insurance companies criticized the cost of $30,000 a month or more, which could reach a total of $126,000 during a course of treatment.