Abstract 4370
Background
In the multi-center investigator-initiated OpACIN-neo trial, patients (pts) with macroscopic stage III melanoma were randomized (stratified by center) to 3 different dosing schemes of neoadjuvant (neoadj) IPI+NIVO. Two cycles IPI 1mg/kg + NIVO3 mg/kg was identified as the most favorable regimen with 20% grade 3-4 adverse events and a pathological response rate (pRR) of 77%. After a median follow-up (FU) of 8.3 months (mo) none (0/86) of the pts with a pathologic (path) response had relapsed, while 9/21 (43%) without a path response relapsed. Post-hoc analyses were conducted to investigate potential differences between pts treated in Europe (EU) and in Australia (AUS).
Methods
Baseline patient characteristics, safety and efficacy in terms of path response were evaluated in pts treated in EU (n = 48) and AUS (n = 38). Multivariate analyses were performed using logistic regression method. Median FU was 9.3mo for EU pts and 6.9mo for AUS pts.
Results
Baseline characteristics (AUS vs EU) differed in age (median 60 vs 53 year [yr], p = 0.017) and AUS pts were more likely to be male (65.8 vs 50.0%, p = 0.142) and have an unknown primary melanoma (36.8 vs 20.8%, p = 0.100); no difference in PD-L1 expression was observed. There was a trend to a higher pRR for AUS pts than for EU pts (84.2% vs 68.1%, OR 2.50, p = 0.092). pRR was also higher for pts >60 yr compared to £60 yr (91.2% vs 64.7%, OR 5.64, p = 0.010) and males vs females (83.7% vs 63.9%, OR 2.90, p = 0.041). Multivariate analysis including continent, age and gender showed an adjusted OR for path response of 1.85 (p = 0.289) for AUS vs EU pts, an OR of 4.89 (p = 0.021) for pts >60yrs vs £60yrs and an OR of 2.50 (p = 0.095) for males vs females. The frequency of high grade toxicity was the same in pts <60 compared to pts >60 yr (42.3% vs 32.4%, p = 0.353).
Conclusions
The continental difference in path response appears mostly driven by differences in age and gender. It remains to be elucidated whether the higher pRRs in elderly pts and pts from AUS can be explained by differences in mutational burden (analysis in progress and will be presented). Our data also indicate that neoadj IPI+NIVO is safe and highly effective in the elderly.
Clinical trial identification
NCT02977052.
Editorial acknowledgement
Legal entity responsible for the study
Netherlands Cancer Institute.
Funding
BMS.
Disclosure
E.A. Rozeman: Travel / Accommodation / Expenses: MSD; Travel / Accommodation / Expenses: NanoString. A.M. Menzies: Advisory / Consultancy: BMS; Advisory / Consultancy: MSD; Advisory / Consultancy: Roche; Advisory / Consultancy: Novartis; Advisory / Consultancy: Pierre Fabre. R.A. Scolyer: Advisory / Consultancy: MSD; Advisory / Consultancy: Neracare; Advisory / Consultancy: Novartis. A.C.J. van Akkooi: Advisory / Consultancy, Research grant / Funding (institution): Amgen; Advisory / Consultancy, Research grant / Funding (institution): BMS; Advisory / Consultancy, Research grant / Funding (institution): Novartis; Advisory / Consultancy: Merck MSD; Advisory / Consultancy: Merck-Pfizer; Advisory / Consultancy: 4SC. J. Hansson: Advisory / Consultancy: BMS; Advisory / Consultancy: MSD; Advisory / Consultancy: Novartis. G.V. Long: Advisory / Consultancy: Aduro; Advisory / Consultancy: Amgen; Advisory / Consultancy: BMS; Advisory / Consultancy: Merck MSD; Advisory / Consultancy: Mass-Array; Advisory / Consultancy: Novartis; Advisory / Consultancy: Pierre Fabre; Advisory / Consultancy: Roche. C.U. Blank: Advisory / Consultancy, Research grant / Funding (institution): BMS; Advisory / Consultancy: MSD; Advisory / Consultancy: Roche; Advisory / Consultancy, Research grant / Funding (institution): Novartis; Advisory / Consultancy: Lilly; Advisory / Consultancy: Pierre Fabre; Advisory / Consultancy: Pfizer; Advisory / Consultancy: GSK; Advisory / Consultancy: GenMab; Research grant / Funding (institution): NanoString. All other authors have declared no conflicts of interest.
Resources from the same session
3361 - Providing a nurse-led telephone intervention for patients treated with oral anticancer medication: symptom management and adherence monitoring
Presenter: Etienne Minvielle
Session: Poster Display session 3
Resources:
Abstract
3937 - Chronological evaluation of health-related quality of life and physical symptoms in postoperative pancreatic cancer patients up to 12 months
Presenter: Naoko Sato
Session: Poster Display session 3
Resources:
Abstract
5620 - Understanding the patients’ Experiences of Radiation Therapy: A Qualitative Study on Prostate Cancer Patients
Presenter: Sakarias Johansson
Session: Poster Display session 3
Resources:
Abstract
1792 - Effect of Kegel exercises on prevention of urinary and fecal incontinence in patients with prostate cancer undergoing radiotherapy
Presenter: Aydan Uravylioglu
Session: Poster Display session 3
Resources:
Abstract
2169 - The Meaning of Responsibility – a Secondary Analysis of Patients and Caregivers Calls to an Oncology Emergency Telephone
Presenter: Heidi Jacobsen
Session: Poster Display session 3
Resources:
Abstract
4587 - Cognitive function changes and Associated Factors in Patients Receiving Chemotherapy
Presenter: Elif Dil
Session: Poster Display session 3
Resources:
Abstract
1981 - Prevention of dental complications in patients with multiple myeloma (MM) receiving bisphosphonates treatment
Presenter: CESCA PUIGMARTI
Session: Poster Display session 3
Resources:
Abstract
2725 - Safety profile of oral netupitant/palonosetron in hematopoietic stem cell transplantation recipients.
Presenter: Marina Bosch - Damas
Session: Poster Display session 3
Resources:
Abstract
5112 - Symptomatic and toxicity management of cancer patients using a telephone support model led by the oncology nurse
Presenter: Gemma Simó
Session: Poster Display session 3
Resources:
Abstract
1365 - Symptom cluster of fatigue, sleep disturbance and depression and its impact on quality of life among Chinese breast cancer patients undergoing adjuvant chemotherapy: A cross-sectional study
Presenter: Xiaole HE
Session: Poster Display session 3
Resources:
Abstract