FAIRLANE: A phase II randomized, double-blind, study of the Akt inhibitor ipatasertib (Ipat, GDC-0068) in combination with paclitaxel (Pac) as neoadjuvant treatment for early stage triple-negative breast cancer (TNBC).

Authors

null

Mafalda Oliveira

Vall d'Hebron University Hospital / VHIO, Barcelona, Spain

Mafalda Oliveira , Cristina Saura , Antonio Gonzalez-Martin , Jay C. Andersen , Julie Gottlieb Fisher , Isabel Calvo , Eva Ciruelos , Miquel Gil , Lorena De La Pena , Marta Llobet-Canela , YounJeong Choi , Shidong Jia , Sreenivasu Yalamanchili , Stina Mui Singel , Premal H. Patel , Jose Baselga , Steven J. Isakoff

Organizations

Vall d'Hebron University Hospital / VHIO, Barcelona, Spain, Vall d'Hebron University Hospital/SOLTI, Barcelona, Spain, GEICO and MD Anderson Cancer Center Spain, Madrid, Spain, Compass Onc, Portland, OR, Levine Cancer Inst, Charlotte, NC, Centro Integral Oncológico Clara Campal, Madrid, Spain, Hospital Universitario 12 De Octubre, Madrid, Spain, Catalan Institute of Oncology, Duran i Reynals, Barcelona, Spain, SOLTI Breast Cancer Research Group, Barcelona, Spain, Genentech, Inc., South San Francisco, CA, Genentech Roche, South San Francisco, CA, Genentech, Inc., Redwood City, CA, Memorial Sloan Kettering Cancer Center, New York, NY, Massachusetts General Hospital Cancer Center, Boston, MA

Research Funding

Pharmaceutical/Biotech Company

Background: TNBC often exhibits activation of PI3K/Akt signaling, associated with loss of PTEN expression, low INPP4B expression, and/or increased AKT3 amplification. Inhibition of the PI3K/Akt pathway in diverse cancers leads to radiosensitization and/or chemosensitization. Ipat is an oral, potent ATP-competitive small molecule inhibitor of all three isoforms of Akt. The combination of ipat with taxanes in preclinical models resulted in enhanced efficacy relative to either ipat or chemotherapy alone. In a Phase Ib clinical study, the combination of Ipat with diverse chemotherapy regimens was well-tolerated and resulted in RECIST responses, particularly pts with tumors having PI3K/Akt activation. Methods: FAIRLANE is a randomized, double-blind, placebo-controlled, multicenter, neoadjuvant Phase II study designed to estimate the efficacy of ipat combined with pac versus placebo combined with pac in women with Stage Ia - IIIa TNBC. Approximately 150 patients (Pts) will be enrolled, randomized in a 1:1 ratio, and stratified by PTEN status, node involvement, and tumor size. Pts will receive 3 cycles of Ipat or placebo 400 mg orally once daily on Days 1 to 21 of each 28-day cycle, along with pac 80 mg/m2 every 7 days for a total of 12 doses. All patients will undergo pretreatment and Day 8 tumor tissue acquisition to evaluate pathway biomarkers. Following three cycles of treatment, patients will undergo surgery. The primary efficacy endpoint, pCR within the breast and axilla (ypT0/Tis ypN0) in all patients and in patients with PTEN-low tumors, will be assessed by local pathology evaluation following completion of neoadjuvant therapy and surgery. Additional endpoints include objective response rate, safety, BCS rate, pharmacokinetics, and pathway biomarkers. Following surgical resection of primary tumor, patients are expected to continue post-operative treatment with a standard adjuvant chemotherapy regimen at physician’s discretion. The study is open for accrual. Clinical trial information: NCT02301988

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Abstract Details

Meeting

2015 ASCO Annual Meeting

Session Type

Poster Session

Session Title

Breast Cancer—Triple-Negative/Cytotoxics/Local Therapy

Track

Breast Cancer

Sub Track

Triple-Negative Breast Cancer

Clinical Trial Registration Number

NCT02301988

Citation

J Clin Oncol 33, 2015 (suppl; abstr TPS1112)

DOI

10.1200/jco.2015.33.15_suppl.tps1112

Abstract #

TPS1112

Poster Bd #

220a

Abstract Disclosures