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Phase I Clinical Trials Sara Tolaney, MD, MPH Breast oncologist Susan F. Smith Center for Women’s Cancers at Dana-Farber Cancer Institute October 5, 2013
What are clinical trials? • Research studies that are designed to answer questions about new ways to treat cancer
Road To FDA Approval FDA Approval Preclinical Phase 1 Phase 2 Phase 3
Goals of Phase 1 Clinical Trials • How much of a new drug can be given safely • How often the drug needs to be given • What are the side effects of the new drug
Types of Phase 1 Trials • Disease specific phase 1 studies • All-comer phase 1 trials open to any solid tumor • New agent alone • Combining new agents • Combining new agent with standard chemotherapy
3 Patients 3 Patients 3 Patients 10 mg 20 mg 30 mg Dose Escalation in Phase 1 Studies: 3+3 Design Once dose determined EXPANSION COHORT Enroll 10-20 patients
Pharmacokinetics (PKs) • Tests how rapidly a drug is cleared from circulation • Challenging for patients because can sometimes require long days and multiple visits a week during the first cycle of therapy
Early Drug Development Center (EDDC) • Conducts research dedicated to studying new drugs • Specializes in phase I clinical trials • Has over 30 phase I studies, some of which are open to patients with all solid tumors, and a few of which are specific to breast cancer • You may be referred to the EDDC to discuss trial possibilities • If you go on a study, you will be followed within the EDDC, but will also continue to have your original oncologist/team involved in your care
Trials of Interest for Breast Cancer • BRCA Carriers • Rucaparib • Veliparib and Irinotecan • Sapacitabine and Seleciclib • ER+ Breast Cancer • Cdk 4/6 inhibitors • Triple-negative Breast Cancer • Mek/akt • Cdk/parp • PDL1 Antibody (immunotherapy)
PARP Inhibitors Igelhart JD and Silver DP. NEJM 2009
PARP Inhibitor Studies • Rucaparib • PARP inhibitor given alone • Veliparib + Irinotecan • PARP inhibitor given with chemotherapy • Olaparib + BKM120 • In breast cancer group, combines PARP with PI3K inhibitor
Sapacitabine + Seleciclib • Sapacitabine: oral chemotherapy • Seleciclib: oral cdk 1,2, 7, 9 inhibitor
Progression-Free Survival 1.0 0.9 0.8 0.7 0.6 Progression-Free Survival Probability 0.5 0.4 0.3 0.2 0.1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 Time (Month) Number of patients at risk PD991+LET 84 75 60 53 43 35 25 18 15 14 9 5 3 1 LET 81 57 38 29 22 17 11 6 5 4 3 3 1 1
Ongoing studies with cdk 4/6 inhibitors • LEE011 • Cdk 4/6 inhibitor given alone, in expansion phase • Lilly cdk 4/6 inhibitor + faslodex
Triple-negative Breast Cancer • PI3K inhibition • GDC-0973/GDC-0068 (MEK/Akt inhibitors) • BKM120 (phase 2) • Dinaciclib/Veliparib • Cdk + PARP • Immunotherapy • PDL1 Antibody
Conclusions • Exciting time in drug development • Several phase I clinical trial options for patients with varying subtypes of breast cancer • Many trials require tissue prescreening with a goal of trying to deliver personalized medicine
Each trial is different, but generally most phase I studies have at least weekly visits for the first cycle (3-4 weeks) then fewer visits thereafter
Frequency of imaging is dependent on the study, but generally every 6-9 weeks
Weigh Pros and Cons Pros: • If a new treatment is proven to work and you are receiving it, you may be among the first to benefit • You can expand the number of treatment options you have • You have a chance to help others and improve cancer care Cons: • New treatments may have side effects that doctors do not expect • Phase I trials often involve frequent visits during the first cycle • Even if a new treatment has benefits, it may not work for you
Generally, almost all insurance companies pay for patients to participate in phase I clinical trials • Anything that is for research purposes (ie. research blood, biopsies) is provided by research • Experimental medication is provided