Abstract 1285
Background
Anaphylatoxin C5a is released in the cancer microenvironment and binds to the C5aR receptor, which in turns promotes protumoral inflammation and immune suppression through recruitment and activation of myeloid derived suppressor cells (MDSC) and neutrophils. Overexpression of C5aR has been reported in several tumor types and correlates with aggressive tumor features and poor prognosis. Additionally, C5aR was found to be upregulated in NSCLC patients in progression after an initial response to an anti-PD-(L)1 therapy (aPD1). IPH5401, a fully human anti-C5aR1 antibody, inhibits the C5a mediated effects on MDSC and neutrophils. Preclinical data suggest that the combined blockade of C5aR1 and aPD1 synergistically reduce tumor growth and delay tumor progression. These data suggest that combining IPH5401 with aPD1 may improve efficacy and overcome secondary resistance to aPD1.
Methods
This is an ongoing phase I to evaluate the safety of IPH5401 + durvalumab (durva) in advanced solid tumors. In the 3 + 3 dose-escalation, patients (pts) receive IPH5401 at 4 dose levels (DL) (DL1, DL2, DL3 [Q1w] and DL4 [Q2w]) single agent during the first 2 weeks (w) then in combination with durva 1500 mg Q4w. Blood samples are collected at various time points for characterization of pharmacokinetics, pharmacodynamics and immunogenicity. Upon completion of the phase I part and determination of a recommended phase II dose, expansion cohorts in NSCLC and HCC will be activated.
Results
As of April, 30th 2019, 12 pts have been enrolled (4 HCC, 2 UCC, 5 NSCLC, 1 RCC). No DLT was seen to date. DL3 and DL4 are ongoing. A total of 11 treatment related AEs (TRAEs) were reported in 5 patients: G2 diarrhea with lymphocytic colitis (n = 1), G1 diarrhea (n = 1), G1 skin rashes (n = 2), G1 White blood cell decrease (n = 1), G1 pneumopathy (n = 1), G1 lung disorder (n = 1), G1 fatigue (n = 1), G1 arthralgia (n = 1), G1 back pain (n = 1), G1 musculoskeletal chest pain (n = 1). There were no grade 3/4 TRAEs and no TRAEs that led to study discontinuation.
Conclusions
Preliminary results of this combination of IPH5401 plus durva suggest a manageable toxicity profile. Results of dose escalation including PK/PD data will be presented.
Clinical trial identification
NCT03665129.
Editorial acknowledgement
Legal entity responsible for the study
Innate Pharma.
Funding
Innate Pharma and AstraZeneca.
Disclosure
C. Massard: Honoraria (self), Advisory / Consultancy: Amgen; Honoraria (self), Advisory / Consultancy: Astellas; Honoraria (self), Advisory / Consultancy: AstraZeneca; Honoraria (self), Advisory / Consultancy: Bayer; Honoraria (self), Advisory / Consultancy: Beigene; Honoraria (self), Advisory / Consultancy: BMS; Honoraria (self), Advisory / Consultancy: Celgene; Honoraria (self), Advisory / Consultancy: Debiopharm; Honoraria (self), Advisory / Consultancy: Genentech; Honoraria (self), Advisory / Consultancy: Ipsen; Honoraria (self), Advisory / Consultancy: Janssen; Honoraria (self), Advisory / Consultancy: Lilly; Honoraria (self), Advisory / Consultancy: MSD; Honoraria (self), Advisory / Consultancy: Novartis; Honoraria (self), Advisory / Consultancy: Pfizer; Honoraria (self), Advisory / Consultancy: Roche; Honoraria (self), Advisory / Consultancy: Sanofi; Honoraria (self), Advisory / Consultancy: Orion. P. Cassier: Honoraria (self), Research grant / Funding (institution), Travel / Accommodation / Expenses: Novartis; Honoraria (self), Research grant / Funding (institution), Travel / Accommodation / Expenses: Roche/Genentech; Honoraria (self), Research grant / Funding (institution): Blueprint Medicines; Honoraria (self), Travel / Accommodation / Expenses: Amgen; Research grant / Funding (institution): Lilly; Research grant / Funding (institution): Bayer; Research grant / Funding (institution): AstraZeneca; Research grant / Funding (institution): Celgene; Research grant / Funding (institution): Plexxikon; Research grant / Funding (institution): AbbVie; Research grant / Funding (institution), Travel / Accommodation / Expenses: BMS; Research grant / Funding (institution): Merck Serono; Research grant / Funding (institution), Travel / Accommodation / Expenses: MSD; Research grant / Funding (institution): Taiho; Research grant / Funding (institution): Toray; Research grant / Funding (institution): Transgene; Research grant / Funding (institution): Loxo; Research grant / Funding (institution): GSK; Research grant / Funding (institution): Innate Pharma; Research grant / Funding (institution): Janssen. J.C. Bendell: Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Gilead; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Genentech/Roche; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: BMS; Advisory / Consultancy, Research grant / Funding (institution): Five Prime; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Lilly; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Merck; Research grant / Funding (institution), Travel / Accommodation / Expenses: MedImmune; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Celgene; Advisory / Consultancy, Research grant / Funding (institution): EMD Serono; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Taiho; Advisory / Consultancy, Research grant / Funding (institution): MacroGenics; Advisory / Consultancy, Research grant / Funding (institution): GSK; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Novartis; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: OncoMed; Advisory / Consultancy, Research grant / Funding (institution): LEAP; Research grant / Funding (institution): TG Therapeutics; Advisory / Consultancy, Research grant / Funding (institution): AstraZeneca; Advisory / Consultancy, Research grant / Funding (institution): Innate Pharma; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: BI; Advisory / Consultancy, Research grant / Funding (institution): Daiichi Sankyo. D.B. Marie: Shareholder / Stockholder / Stock options, Full / Part-time employment: Innate Pharma. M. Blery: Shareholder / Stockholder / Stock options, Full / Part-time employment: Innate Pharma. C. Morehouse: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. M. Ascierto: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. R. Zerbib: Shareholder / Stockholder / Stock options, Full / Part-time employment: Innate Pharma. E. Mitry: Shareholder / Stockholder / Stock options, Full / Part-time employment: Innate Pharma. A.W. Tolcher: Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: AbbVie; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: ADC Therapeutics; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Adagene; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Agenus; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: AroBioTX; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Ascentage; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Aximmune; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Bayer; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: BioInvent; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Birdie; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Boston Bio; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: EMD Serono; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Forbius; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: HBM partners; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Ignitia; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Immunome; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Immunomet; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Jazz; Honoraria (self), Advisory / Consultancy, Travel / Accommodation / Expenses: Mekanistic; Research grant / Funding (institution): Innate Pharma.
Resources from the same session
5056 - Phase 2 study of 2 dosing regimens of cemiplimab, a human monoclonal anti–PD-1, in metastatic cutaneous squamous cell carcinoma (mCSCC)
Presenter: Danny Rischin
Session: Poster Display session 3
Resources:
Abstract
5710 - Avelumab for advanced Merkel cell carcinoma in the Netherlands; a nationwide survey
Presenter: Sonja Levy
Session: Poster Display session 3
Resources:
Abstract
3152 - Health-related quality of life in patients with metastatic Merkel cell carcinoma receiving second-line or later avelumab treatment: 36-month follow-up data
Presenter: Sandra D'Angelo
Session: Poster Display session 3
Resources:
Abstract
5715 - A Phase 2, Randomized Study of Nivolumab (NIVO) and Ipilimumab (IPI) versus NIVO, IPI and Stereotactic Body Radiation Therapy (SBRT) for Metastatic Merkel Cell Carcinoma (MCC, NCT03071406) – a preliminary report.
Presenter: Sungjune Kim
Session: Poster Display session 3
Resources:
Abstract
2854 - Real-world impact of immune checkpoint inhibitors in metastatic uveal melanoma
Presenter: Kalijn Bol
Session: Poster Display session 3
Resources:
Abstract
2928 - Immune checkpoint inhibitors in a cohort of 206 metastatic uveal melanomas patients
Presenter: Mathilde Saint-Ghislain
Session: Poster Display session 3
Resources:
Abstract
1235 - Incidence and survival of Uveal Melanoma occurring as single cancer versus its occurrence as a first or second primary neoplasm
Presenter: Ahmad Alfaar
Session: Poster Display session 3
Resources:
Abstract
3615 - Validation of a Clinicopathological and Gene Expression Profile (CP-GEP) Model for Sentinel Lymph Node Metastasis in Primary Cutaneous Melanoma
Presenter: Evalyn Mulder
Session: Poster Display session 3
Resources:
Abstract
1793 - External validation of the 8th Edition Melanoma Staging System of the American Joint Committee on Cancer (AJCC) using the Surveillance, Epidemiology and End Results (SEER) Program
Presenter: Angelina Tjokrowidjaja
Session: Poster Display session 3
Resources:
Abstract
4278 - Clinical factors and overall survival (OS) associated with patterns of metastases (mets) in melanoma patients (pts).
Presenter: Ines Pires da Silva
Session: Poster Display session 3
Resources:
Abstract