Abstract 3251
Background
NACT is increasingly used as a model to explore new targeted therapy in combination with CT in AOC. Whether an intermediate endpoint could be used as surrogate of PFS and/or OS in pts treated with NACT remains currently elusive and was explored retrospectively in the CHIVA trial.
Methods
Patients (pts) with FIGO stage IIIC-IV AOC considered as unresectable after laparoscopic (Lap) evaluation were treated with 3 to 4 cycles of platinum-taxane NACT + oral nintedanib before interval debulking surgery (IDS). CT (up to 6 cycles in total) and nintedanib were pursued post-operatively. Were measured response rates at the end of NACT according to RECIST (ORR) with CT-scan and to GCIG with CA125, initial Peritoneal Cancer Index (PCI) and its evolution at IDS, complete surgical resection rate (CC0), pathologic complete or near complete response rate (pCR). These covariates in univariate analysis were included together with other prognostic clinical covariates:age, FIGO stage, ECOG, tumor size, ascitis, neutrophil/lymphocyte ratio, platelet and hemoglobin counts and symptoms (pain).
Results
A total of 163/188 pts included in the CHIVA trial were evaluable for the analysis. Median follow-up is 42. 6 mos (95% CI: 39.9-44.8). In the univariate Cox model, ECOG, ascitis, neutrophil/lymphocyte ratio, PCI at baseline, RECIST ORR, CC0 at IDS, pCR and treatment arm were correlated (p < 0.05) to PFS and/or OS. In the multivariate Cox model, RECIST ORR (p < 0.01) and CC0 at IDS (p < 0.01) were the only variables predictive of both PFS and OS. The median PFS was respectively 10.4, 15.1 and 18.3 mos among the 3 groups of pts with 1) No ORR and no CC0; 2)only CC0 or only ORR; 3)ORR and CC0. PFS Hazard Ratio was 0.33 [0.20; 0.52], 0.43 [0.32; 0.70] and 0.68 [0.44; 1.06] for group 3v1, 2vs1 and 2v3 respectively. Median OS was 25.4, 41.0 mos and not reached for group 1, 2, and 3 respectively (p < 0.001).
Conclusions
Results from the CHIVA trial suggest that the rate of patients who achieve both a RECIST response to NACT and a complete surgical resection (CC0) at IDS could be used as the main primary endpoint for future NACT trials.
Clinical trial identification
2011-006288-23.
Editorial acknowledgement
Legal entity responsible for the study
ARCAGY-GINECO.
Funding
Boehringer Ingelheim.
Disclosure
F. Lecuru: Advisory / Consultancy, Board: AstraZeneca; Advisory / Consultancy, Proctoring: Intuitive Surgical. E. Pujade-Lauraine: Honoraria (self), Self: AstraZeneca; Honoraria (self), Self: Tesaro; Advisory / Consultancy: AstraZeneca; Advisory / Consultancy: Roche; Advisory / Consultancy: Clovis; Advisory / Consultancy: Tesaro; Advisory / Consultancy: Genmab; Advisory / Consultancy: Incyte; Advisory / Consultancy: MSD; Advisory / Consultancy: Pfizer; Research grant / Funding (institution): AstraZeneca; Research grant / Funding (institution): Roche; Research grant / Funding (institution): Tesaro; Travel / Accommodation / Expenses: AstraZeneca; Travel / Accommodation / Expenses: Roche; Travel / Accommodation / Expenses: Tesaro. N. Raban: Travel / Accommodation / Expenses: Roche. P. Pautier: Advisory / Consultancy: Roche; Advisory / Consultancy: AstraZeneca; Advisory / Consultancy: Tesaro; Advisory / Consultancy: Clovis; Advisory / Consultancy: Genentech; Research grant / Funding (institution): PharmaMar; Travel / Accommodation / Expenses: Roche; Travel / Accommodation / Expenses: AstraZeneca; Travel / Accommodation / Expenses: Tesaro. J. Alexandre: Honoraria (self): Roche; Honoraria (self): AstraZeneca; Honoraria (self): Ipsen; Honoraria (self): Novartis; Honoraria (self): PharmaMar; Advisory / Consultancy: Roche; Advisory / Consultancy: AstraZeneca; Advisory / Consultancy: Novartis; Research grant / Funding (institution): Janssen; Travel / Accommodation / Expenses: Janssen; Travel / Accommodation / Expenses: Novartis. N. Dohollou: Research grant / Funding (institution): Roche; Research grant / Funding (institution): Novartis; Research grant / Funding (institution): Lilly. A. Floquet: Advisory / Consultancy: Tesaro; Advisory / Consultancy: Clovis; Advisory / Consultancy: AstraZeneca; Travel / Accommodation / Expenses: Tesaro; Travel / Accommodation / Expenses: AstraZeneca; Travel / Accommodation / Expenses: Roche. C. Louvet: Advisory / Consultancy: MSD; Advisory / Consultancy: Roche; Advisory / Consultancy: Halozyme; Advisory / Consultancy: Servier; Advisory / Consultancy: AstraZeneca; Travel / Accommodation / Expenses: Roche; Travel / Accommodation / Expenses: MSD. A. Lortholary: Honoraria (self): AstraZeneca; Honoraria (self): Tesaro. G. Ferron: Honoraria (self): Olympus Europe; Advisory / Consultancy: AstraZeneca; Advisory / Consultancy: Tesaro; Travel / Accommodation / Expenses: Roche. All other authors have declared no conflicts of interest.
Resources from the same session
3516 - Palbociclib Rechallenge in Hormone Receptor (HR)[+]/HER2[-] Advanced Breast Cancer (ABC). PALMIRA Trial
Presenter: Antonio Llombart Cussac
Session: Poster Display session 2
Resources:
Abstract
4616 - Alpelisib (ALP) + Endocrine Therapy (ET) by Last Prior Therapy in Patients (pts) With PIK3CA-Mutated Hormone-Receptor Positive (HR+) Human Epidermal Growth Factor Receptor-2-Negative (HER2–) Advanced Breast Cancer (ABC): Additional Study Cohort in BYLieve
Presenter: Eva Ciruelos
Session: Poster Display session 2
Resources:
Abstract
3592 - PRECYCLE: Impact of CANKADO-based eHealth-support on quality of life in metastatic breast cancer patients treated with palbociclib and endocrine therapy.
Presenter: Tom Degenhardt
Session: Poster Display session 2
Resources:
Abstract
4168 - Efficacy and safety of oral poly (ADP-ribose) polymerase inhibitor fluzoparib in patients with BRCA1/2 mutations and platinum sensitive recurrent ovarian cancer
Presenter: Ning Li
Session: Poster Display session 2
Resources:
Abstract
2785 - Effect of response to last platinum-based chemotherapy in patients (pts) with platinum-sensitive, recurrent ovarian carcinoma in the phase 3 study ARIEL3 of rucaparib maintenance treatment
Presenter: Jonathan Ledermann
Session: Poster Display session 2
Resources:
Abstract
3496 - Integrated safety analysis of the poly(ADP-ribose) polymerase (PARP) inhibitor rucaparib in patients (pts) with ovarian cancer in the treatment and maintenance settings
Presenter: Rebecca Kristeleit
Session: Poster Display session 2
Resources:
Abstract
2844 - Clinical factors associated with prolonged response and survival under olaparib as maintenance therapy in BRCA mutated ovarian cancers
Presenter: S.Intidhar Labidi-Galy
Session: Poster Display session 2
Resources:
Abstract
1955 - A Prospective Evaluation of Tolerability of Niraparib Dosing Based on Baseline Body Weight (BW) and Platelet (plt) Count: Blinded Pooled Interim Safety Data from the NORA Study
Presenter: Xiaohua Wu
Session: Poster Display session 2
Resources:
Abstract
2539 - Evaluation of Niraparib 200 mg/d as Maintenance Therapy in Recurrent Ovarian Cancer and Associated Thrombocytopenia in a Real-World US Setting
Presenter: Premal Thaker
Session: Poster Display session 2
Resources:
Abstract
1290 - Niraparib initial dose and its’ management in patients with recurrent high-grade serous ovarian cancer.
Presenter: Jacek Grabowski
Session: Poster Display session 2
Resources:
Abstract