Conditions: Ocular Melanoma
Keywords: STA9090 STA-9090 HSP90
Allocation: NON_RANDOMIZED | Intervention model: SINGLE_GROUP
Enrollment: 17
Healthy volunteers: no

Brief summary:
STA-9090, a synthetic small molecule, demonstrates significant activity for down-regulating Heat Shock Protein 90 or Hsp90 levels. Hsp90 belongs to a class of molecular chaperone proteins known to be critical regulators of cancer cell proliferation and survival. Preclinical laboratory experiments have shown STA-9090, an Hsp90 inhibitor, could inhibit ocular melanoma cell lines. The primary objective of this trial is to obtain evaluations of STA-9090 efficacy to metastatic ocular melanoma.

Detailed description:
Patients with metastatic ocular melanoma have a poor prognosis and very limited standard therapeutic options. The recent discoveries of GNAQ and GNA11 mutations leading to MAPK pathway activation and the over-expression of c-Met generate the hypothesis that inhibition of hsp90 client proteins will provide clinical benefit. This study tests the feasibility and efficacy of hsp90 inhibition in patients with metastatic ocular melanoma. Multiple components of the MAPK pathway (B-Raf, C-Raf, cdk4) in addition to c-Met are client proteins of hsp90 and dependent of active hsp90 for stability. Inhibition of hsp90 should lead to decreased expression of these client proteins.

Arms:
arm 1: Cohort A participants received STA-9090 200 mg/m2 given intravenously (IV) over 1 hour once weekly (d1, 8, 15 of a 28 day cycle).

Participants were treated until evidence of disease progression, unacceptable toxicity, intercurrent illness or withdrawal. arm 2: Cohort B participants received STA-9090 150 mg/m2 given intravenously over 1 hour (IV) twice weekly (d1, 4, 8, 11, 15, 18 of a 28 day cycle).

Participants were treated until evidence of disease progression, unacceptable toxicity, intercurrent illness or withdrawal.

Interventions: intervention 1: STA-9090
Intervention descriptions: intervention 1: None

Protocol document: