Abstract 4733
Background
NA chemotherapy (CT) +/- anti-Her2 treatment of operable breast cancer (BC) is considered a standard option in the management of BC. However, pathologic complete response (pCR) rates with CT in HR+/Her2- BC are usually low: 7% (Luminal A) to 16% (Luminal B). Alternatively, NA endocrine therapy (ET) has not been established as a standard treatment because of low pCRs.
Methods
This is a multicenter phase III, 3rd generation NA trial performed in 34 centers and 7 countries of Middle-East and North Africa (MENA Region). The objective is to investigate the potential role of adding Palbociclib to ET (Fulvestrant +/- Goserelin) compared to ET alone as NA therapy of HR+/Her2- operable BC sensitive to ET. The primary endpoint is pCR with the hypothesis that the addition of Palbociclib would increase the pCR rate from 5% to 15%. Clinical/radiological response, conservative surgery rate, safety, disease-free and OS are secondary endpoints. Exploratory endpoints encompass biomarker serial analysis of liquid biopsies with Quantum Optic and DNA methylation technologies.
Results
A total of 400 pre and post-menopausal pts with stage II and IIIA are planned to be recruited. Oncotype DX is performed upfront in order to eliminate CT candidates. All pts with a recurrence score (RS) < 31 are treated with Fulvestrant (500 mg Day (d.) 1, 14, 28 then q. 28 d. (+/- Goserelin 3.6 mg q.28 d.) for 4 months. Pts with responding/stable disease are then randomized in double blind fashion to Fulvestrant (+/- Goserelin) with either Palbociclib 125mg po daily 3 weeks/4 or placebo. Four additional cycles are delivered before surgery The trial was initiated in 2018. As of April 2019, 196 patients have been enrolled. The majority of them (60%) are pre/peri menopausal. The mean age is 50.5 years (range: 25-83). RS of < 31 was reported in 75% of cases. So far, 96 pts have completed the induction ET and were randomized to ET with or without Palbociclib. End of accrual is expected by end of 2019.
Conclusions
SAFIA trial aims to evaluate whether or not the addition of a CDK 4/6 inhibitor to pts sensitive to ET would validate a neo-adjuvant strategy without CT in luminal operable BC.
Clinical trial identification
NCT03447132.
Editorial acknowledgement
Legal entity responsible for the study
International Cancer Research Group (ICRG).
Funding
Pfizer, AstraZeneca and Genomic Health.
Disclosure
All authors have declared no conflicts of interest.
Resources from the same session
5658 - Detection of 5-hydroxymethylcytosine in Circulating-Free DNA for Early Diagnosis of Colorectal Cancer
Presenter: Tianyu Liu
Session: Poster Display session 2
Resources:
Abstract
5779 - Detection of 5-hydroxymethylcytosine in Circulating-Free DNA for Prediction of The Efficacy of Conversion Therapy for Colorectal Cancer Liver Metastases
Presenter: Wenju Chang
Session: Poster Display session 2
Resources:
Abstract
4672 - mCRC gene profiling using the Idylla platform
Presenter: Christopher Bricogne
Session: Poster Display session 2
Resources:
Abstract
3393 - PIK3CA mutation in metastatic colorectal cancer (mCRC): association with clinico-pathological features and outcome
Presenter: Valentina Fanotto
Session: Poster Display session 2
Resources:
Abstract
1317 - Patient-Derived Xenografts (PDX) Identifies JMJD6 Inhibitor as an Effective Therapeutic Medicine in Colorectal Cancer.
Presenter: Feng Ye
Session: Poster Display session 2
Resources:
Abstract
1228 - DACH1 induced stemness of intestinal organoids by directly suppressing BMP signaling and contributes to intestinal tumorigenesis
Presenter: Xiang Hu
Session: Poster Display session 2
Resources:
Abstract
1147 - miR-148a inhibits early relapsed colorectal cancers and the secretion of VEGF by indirectly targeting HIF-1α under non-hypoxia/hypoxia conditions
Presenter: Hsiang-lin Tsai
Session: Poster Display session 2
Resources:
Abstract
1158 - Long noncoding RNA CASC21 promotes cell proliferation and metastasis in colon cancer.
Presenter: Qun Zhang
Session: Poster Display session 2
Resources:
Abstract
1259 - Prognostic and Predictive Impact On FMS-like Tyrosine Kinase 3 (FLT3) Amplification In Patients With Metastatic Colorectal Cancer
Presenter: Hiroko Hasegawa
Session: Poster Display session 2
Resources:
Abstract
1452 - RBP-Jκ in colon cancer cells facilitates tumor associated macrophages (TAMs)-induced cell metastasis by secreting CXCL11
Presenter: Meng jie Liu
Session: Poster Display session 2
Resources:
Abstract