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Protocol Number: 09-C-0174
-Bcl-2 family of proteins are regulators of the intrinsic apoptosis pathway -ABT-263 is a small molecule Bcl-2 family protein inhibitor that binds with high affinity to multiple anti-apoptotic Bcl-2 family proteins including Bcl- XL, Bcl-2, Bcl-w, BclB. -B-cell lymphomas and small cell lung cancer highly express Bcl-2 and are exquisitely sensitive in vitro and in vivo to the compound. OBJECTIVES: Phase 2A Objectives -Safety assessment at the recommended Phase 2 dose -Preliminary efficacy assessment ELIGIBILITY: Phase 2A -Histologically documented SCLC measurable by RECIST -Chemotherapy naive extensive stage SCLC or the subject has received at least one chemotherapy treatment regimen and has experienced progressive disease following treatment, or their disease is refractory -Patients with brain metastases must have clinically controlled neurologic symptoms defined by surgical excision and or radiation, therapy followed by 21 days of stable neurologic function -Female subjects must be surgically sterile, postmenopausal or have a negative pregnancy test. Females who are not surgically sterile or postmenopausal and all non-vasectomized male subjects must agree to an approved birth control (double barrier or hormonal contraceptives) -greater than or equal to 18 years of age; ECOG 51 -Subjects receiving Selective Serotonin Reuptake Inhibitor (SSRI) antidepressants (e.g., Prozac) must be receiving a stable dose for at least 21 days -Patients should have adequate liver, renal, and bone marrow function, and adequate coagulation parameters -Patients with active peptic ulcer disease or other potentially hemorrhagic esophagitis/gastritis will be excluded -Patients may not have received chemotherapy, radiation, hormonal, biologic or other investigational therapy within 14 days of first dose of study drug. Subject must have recovered to less than a grade 2 clinically significant adverse events. -The subject must have archived diagnostic tissue available for assessment of Bcl-2 family protein expression. -Patient must sign informed consent. STUDY DESIGN: -ABT-263 will be administered orally for 14 consecutive days followed by 7 days off drug. All subjects will self-administer ABT-263 at approximately 30 minutes after breakfast -40 patients will be entered in to the Phase 2A portion of the study at all sites. The CCR will enter 10 patients on to study. -Blood will be collected for pharmacogenetics, proteomics, serum markers ProGRP and M30IM65, and circulating tumor cells in consenting patients only. -Blood screening tests will be obtain within 14 days of drug administration; imaging will be performed within 21 days of drug administration. -Lymphocyte enumeration with be performed at screening, on day 14 of cycle 1,after cycle 4 and every 3 cycles thereafter and at final visit. -Pharmacokinetics will be collected on cycle 1 day 14, pre dose and 4 hours post dose. -IHC and FISH will be performed on tissue slides from archived, diagnostic, formalin fixed paraffin embedded tissue blocks for all patients
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