This study is a prospective, open-label, multi-cohort, exploratory phase II clinical trial in patients with either CEACAM5-positive NSQ NSCLC, ER+ breast cancer or gastric cancer. Eligible subjects will receive Tusamitamab ravtansine (100mg/m2 IV Q2W). The investigators hypothesize that intratumoral exposure of Tusamitamab ravtansine would be an important factor in determining treatment efficacy. Combining exposure with measurements of tumor PD reactions in a proper PK/PD study is the goal of this study.

Start Date16 Feb 2024

Sponsor / Collaborator

Erasmus MC

[+1]

NCT05849246 / TerminatedPhase 2

Open-label, Phase 2 Study of Tusamitamab Ravtansine (IBI126) Combined With Sintilimab and Tusamitamab Ravtansine (IBI126) Combined With Sintilimab Plus Platinum-based Chemotherapy and Pemetrexed in Subjects With CEACAM5 Positive Expression Advanced/Metastatic Non-squamous Non-small-cell Lung Cancer (NSQ NSCLC)

Primary objective：
·To assess the antitumor activity of tusamitamab ravtansine in combination with sintilimab and tusamitamab ravtansine in combination with sintilimab, platinum-based chemotherapy and pemetrexed in the NSQ NSCLC population.
Secondary objectives： To assess the safety and tolerability of tusamitamab ravtansine in combination with sintilimab and tusamitamab ravtansine in combination with sintilimab, platinum-based chemotherapy and pemetrexed in the NSQ NSCLC population.
To assess the pharmacokinetic (PK) characteristic of tusamitamab ravtansine in combination with sintilimab and tusamitamab ravtansine in combination with sintilimab, platinum-based chemotherapy and pemetrexed in the NSQ NSCLC population.

Start Date31 Jul 2023

Sponsor / Collaborator

Innovent Biologics (Suzhou) Co. Ltd.

100 Clinical Results associated with CEACAM5 x Tubulin

100 Translational Medicine associated with CEACAM5 x Tubulin

0 Patents (Medical) associated with CEACAM5 x Tubulin

Literatures (Medical) associated with CEACAM5 x Tubulin

15 Dec 2020·Clinical Cancer ResearchQ1 · MEDICINE

Preclinical Activity of SAR408701: A Novel Anti-CEACAM5–maytansinoid Antibody–drug Conjugate for the Treatment of CEACAM5-positive Epithelial Tumors

Q1 · MEDICINE

Article

Author: Decary, Stéphanie ; Prades, Catherine ; Berne, Pierre-François ; Lefebvre, Anne-Marie ; Beys, Eric ; Brillac, Claire ; Blanc, Véronique ; Naimi, Souad ; Nicolazzi, Céline ; Henry, Christophe ; Lacoste, Eric ; Cameron, Béatrice ; García-Echeverría, Carlos ; Amara, Céline ; Mayaux, Jean-François ; Bouchard, Hervé ; Rival, Pierrick ; Devaud, Catherine ; Ferrari, Paul ; Maçon, Laetitia ; Dabdoubi, Tarik ; Cassé, Alhassan ; Combeau, Cecile

AbstractPurpose:Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5) is a glycoprotein that has limited expression in normal adult tissues, but is overexpressed in carcinomas of the gastrointestinal tract, the genitourinary and respiratory systems, and breast cancer. As such, CEACAM5 is an attractive target for antibody-based therapies designed to selectively deliver cytotoxic drugs to certain epithelial tumors. Here, we describe preclinical data for a novel antibody–drug conjugate (ADC), SAR408701, which consists of an anti-CEACAM5 antibody (SAR408377) coupled to a maytansinoid agent DM4 via a cleavable linker.Experimental Design:The specificity and binding affinity of SAR408701 to human and cynomolgus monkey CEACAM5 were tested in vitro. The cytotoxic activity of SAR408701 was assessed in CEACAM5-expressing tumor cell lines and using patient-derived xenograft mouse models of CEACAM5-positive tumors. Pharmacokinetic-pharmacodynamic and pharmacokinetic-efficacy relationships were established. SAR408701 toxicity was evaluated in cynomolgus monkey.Results:SAR408701 bound selectively to human and cynomolgus monkey CEACAM5 with similar apparent Kd values (0.017 nmol/L and 0.024 nmol/L, respectively). Both in vitro and in vivo evaluations showed that SAR408701 has cytotoxic activity, leading to in vivo efficacy in single and repeated dosing. Single doses of SAR408701 induced significant increases in the tumor expression of phosphorylated histone H3, confirming the tubulin-targeting mechanism of action. The overall toxicity profile of SAR408701 in cynomolgus monkey was similar to that observed after intravenous administration of DM4 alone.Conclusions:On the basis of these preclinical data, the ADC SAR408701 is a promising candidate for development as a potential treatment for patients with CEACAM5-positive tumors.

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