Abstract 3811
Background
LUR is a new agent that exerts antitumor activity through inhibition of trans-activated transcription and modulation of tumor microenvironment. Preclinical synergism/additivity in combination with IRI has been reported, thus prompting the conduct of this trial.
Methods
Phase I trial to evaluate escalating doses of LUR on Day (D) 1 plus a fixed dose of IRI 75 mg/m2 on D1 and D8 every 3 weeks (q3w) in pts with advanced solid tumors, enrolled following a standard 3 + 3 dose escalation design.
Results
39 pts were treated at 5 dose levels (DL); 13 at the recommended dose (RD). 56% were females, 69% had ECOG PS = 1; median age was 58 years; median of 2 prior chemotherapy lines for advanced disease (range, 0 − 4) per pt. RD was defined as LUR 2.0 mg/m2 on D1 + IRI 75 mg/m2 on D1 and D8 q3w + GCSF. Dose-limiting toxicities in Cycle 1 were observed in 2/3 evaluable pts at the maximum tolerated dose (MTD) and in 3/13 evaluable pts at the RD. At the MTD and the RD, DLTs were skipping IRI D8 doses due to grade (G) 3-4 neutropenia (n = 3 patients) or G2-4 thrombocytopenia (n = 2). At the RD common G1/2 toxicities were nausea, vomiting, fatigue, diarrhea, anorexia and neuropathy; G3/4 hematological abnormalities comprised neutropenia (33%), but no thrombocytopenia. Objective RECIST responses were documented in 6/34 evaluable pts (18%): 3/11 pts with small cell lung cancer (SCLC), 2/2 pts with endometrial carcinoma (EC) and 1/3 pts with glioblastoma (GB). Most responses (5/12 evaluable patients [42%]) were at the RD. One pt with EC has an ongoing PR after 20 cycles. Prolonged SD > 4 months were observed in pancreatic carcinoma (3/6 pts), soft tissue sarcoma (STS) (5/9 pts) and SCLC (6/11, including 4 with SD for 6, 9, 11 and 26+ months).
Conclusions
The combination of LUR and IRI is well tolerated, with no unexpected toxicities. Myelosuppression was dose-limiting, but predictable and manageable. The RD is LUR 2.0 mg/m2 on D1 + IRI 75 mg/m2 on D1 and D8 q3w with GCSF. Notable antitumor activity was observed, especially in SCLC, EC, GB and STS. Expansion in these indications is warranted.
Clinical trial identification
NCT02611024.
Editorial acknowledgement
Legal entity responsible for the study
PharmaMar SA.
Funding
PharmaMar.
Disclosure
S. Ponce Aix: Advisory / Consultancy: Roche; Speaker Bureau / Expert testimony: Roche, BMS, MSD. G. Coté: Advisory / Consultancy: Agios; Research grant / Funding (institution), Research funding to my institution for the conduct of clinical trials; no salary support: Epizyme, Eisai, Macrogenics, Boston Biomedical, Plexxicon, Merck KGaA/EMD Serono Research and Development Institute, CBA Inc, Bayer. R. Nuñez: Shareholder / Stockholder / Stock options, Full / Part-time employment: PharmaMar. M. Siguero: Shareholder / Stockholder / Stock options, Full / Part-time employment: PharmaMar. M. Insa: Full / Part-time employment: PharmaMar. M. Cullell-Young: Shareholder / Stockholder / Stock options, Full / Part-time employment: PharmaMar. C. Kahatt: Shareholder / Stockholder / Stock options, Full / Part-time employment: PharmaMar. A. Zeaiter: Shareholder / Stockholder / Stock options, Full / Part-time employment: PharmaMar. L. Paz-Ares: Advisory / Consultancy: Amgen; AstraZeneca; Boehringer Ingelheim; Bristol-Myers Squibb; Clovis Oncology; MSD; Novartis; Pfizer; Roche; Takeda. All other authors have declared no conflicts of interest.
Resources from the same session
1842 - Immunological impact of surgery in NSCLC patients
Presenter: Akitoshi Yanagihara
Session: Poster Display session 1
Resources:
Abstract
4124 - The prognostic value of selected immunological panel in predicting the prognosis of early-stage resectable non-small cell lung cancer
Presenter: Sha Zhao
Session: Poster Display session 1
Resources:
Abstract
4468 - Genomic Heterogeneity and Clonality Analysis of Multiple synchronous lung cancers (MSLCs)
Presenter: Fachen Zhou
Session: Poster Display session 1
Resources:
Abstract
5547 - Analysis of immunosuppressive factors produced by tumorspheres in NSCLC. Prognostic value of Galectin-3 in adenocarcinoma
Presenter: Susana Torres Martinez
Session: Poster Display session 1
Resources:
Abstract
1658 - Frequency of epidermal growth factor receptor (EGFR) mutations in stage IB–IIIA EGFR mutation positive non-small-cell lung cancer (NSCLC) after complete tumour resection
Presenter: Masahiro Tsuboi
Session: Poster Display session 1
Resources:
Abstract
1535 - EGFR mutation is not a prognostic factor in completely resected lymph node–negative pulmonary adenocarcinoma (LNNPA)
Presenter: Nussara Leeladejkul
Session: Poster Display session 1
Resources:
Abstract
3262 - Prognostic significance of elements of the adaptive immunity in the microenvironment of early-stage non small cell lung cancer
Presenter: Aliki Liakea
Session: Poster Display session 1
Resources:
Abstract
4643 - Combined immunoscore for prognostic stratification of early stage NSCLC patients
Presenter: Giulia Pasello
Session: Poster Display session 1
Resources:
Abstract
4819 - Radiation-induced lung injury and misdiagnosis rate after SBRT
Presenter: Xiaolong Fu
Session: Poster Display session 1
Resources:
Abstract
681 - Significance of the red blood cell distribution width in resected pathological stage I non-small cell lung cancer
Presenter: Gouji Toyokawa
Session: Poster Display session 1
Resources:
Abstract