PMID- 25503302 OWN - NLM STAT- MEDLINE DCOM- 20151027 LR - 20231104 IS - 1573-7373 (Electronic) IS - 0167-594X (Print) IS - 0167-594X (Linking) VI - 121 IP - 3 DP - 2015 Feb TI - Vandetanib plus sirolimus in adults with recurrent glioblastoma: results of a phase I and dose expansion cohort study. PG - 627-34 LID - 10.1007/s11060-014-1680-2 [doi] AB - Targeting specific molecular alterations in glioblastoma (GBM) might more effectively kill tumor cells and increase survival. Vandetanib inhibits epidermal growth factor receptor and vascular endothelial growth factor receptor 2. Sirolimus inhibits mammalian target of rapamycin (mTOR), a member the phosphoinositide 3-Kinase signaling pathway. We sought to determine the maximum tolerated dose (MTD) and dose-limiting toxicity (DLT) of vandetanib combined with sirolimus. Twenty-two patients (14 men; 8 women) with recurrent GBM enrolled. Median age and KPS were 52.5 years and 90 %, respectively. Patients were naive to anti-VEGF and anti-EGF therapy and mTOR inhibitors, and not on CYP3A4-inducing drugs. Vandetanib and sirolimus were orally administered on a continuous daily dosing schedule in escalating dose cohorts. Ten patients enrolled in the dose escalation phase. Twelve more enrolled at the MTD to explore progression-free survival at 6 months (PFS6) in a single arm, single stage phase II-type design. In total, 19 patients received at least one dose at the MTD, and 15 completed at least 1 cycle at MTD. MTD was 200 mg vandetanib plus 2 mg sirolimus. The DLT was elevated AST/SGOT. The most common toxicities were lymphopenia, fatigue, rash, and hypophosphatemia. For 19 patients who received at least one dose at the MTD, including seven from the phase I group, two had a partial response [10.5 %; 95 % CI (1, 33 %)] and PFS6 was 15.8 % [95 % CI (3.9, 34.9 %)]. Vandetanib and sirolimus can be safely co-administered on a continuous, daily dosing schedule. FAU - Chheda, Milan G AU - Chheda MG AD - Stephen E. and Catherine Pappas Center for Neuro-Oncology, Massachusetts General Hospital, Yawkey 9 East, 55 Fruit Street, Boston, MA, 02114, USA, chhedam@mskcc.org. FAU - Wen, Patrick Y AU - Wen PY FAU - Hochberg, Fred H AU - Hochberg FH FAU - Chi, Andrew S AU - Chi AS FAU - Drappatz, Jan AU - Drappatz J FAU - Eichler, April F AU - Eichler AF FAU - Yang, Daniel AU - Yang D FAU - Beroukhim, Rameen AU - Beroukhim R FAU - Norden, Andrew D AU - Norden AD FAU - Gerstner, Elizabeth R AU - Gerstner ER FAU - Betensky, Rebecca A AU - Betensky RA FAU - Batchelor, Tracy T AU - Batchelor TT LA - eng SI - ClinicalTrials.gov/NCT00821080 GR - K08 NS062907/NS/NINDS NIH HHS/United States GR - K12 CA090354/CA/NCI NIH HHS/United States GR - K24 CA125440/CA/NCI NIH HHS/United States PT - Clinical Trial, Phase I PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20141213 PL - United States TA - J Neurooncol JT - Journal of neuro-oncology JID - 8309335 RN - 0 (Piperidines) RN - 0 (Quinazolines) RN - W36ZG6FT64 (Sirolimus) RN - YO460OQ37K (vandetanib) SB - IM MH - Adult MH - Aged MH - Antineoplastic Combined Chemotherapy Protocols/*therapeutic use MH - Brain Neoplasms/*drug therapy MH - Cohort Studies MH - Disease-Free Survival MH - Female MH - Glioblastoma/*drug therapy MH - Humans MH - Male MH - Maximum Tolerated Dose MH - Middle Aged MH - Neoplasm Recurrence, Local/*drug therapy MH - Piperidines/administration & dosage/adverse effects MH - Quinazolines/administration & dosage/adverse effects MH - Sirolimus/administration & dosage/adverse effects PMC - PMC4324090 MID - NIHMS649066 COIS- Conflict of interest All other authors have no conflict of interest. EDAT- 2014/12/17 06:00 MHDA- 2015/10/28 06:00 PMCR- 2016/02/01 CRDT- 2014/12/16 06:00 PHST- 2014/09/29 00:00 [received] PHST- 2014/11/21 00:00 [accepted] PHST- 2014/12/16 06:00 [entrez] PHST- 2014/12/17 06:00 [pubmed] PHST- 2015/10/28 06:00 [medline] PHST- 2016/02/01 00:00 [pmc-release] AID - 10.1007/s11060-014-1680-2 [doi] PST - ppublish SO - J Neurooncol. 2015 Feb;121(3):627-34. doi: 10.1007/s11060-014-1680-2. Epub 2014 Dec 13.