Reference Detail

Ref Type

Journal Article

PMID

(30585255)

Authors

de Weger VA, de Jonge M, Langenberg MHG, Schellens JHM, Lolkema M, Varga A, Demers B, Thomas K, Hsu K, Tuffal G, Goodstal S, Macé S, Deutsch E

Title

A phase I study of the HDM2 antagonist SAR405838 combined with the MEK inhibitor pimasertib in patients with advanced solid tumours.

Journal	Vol	Issue	Date	Pages	Journal Short Title
British journal of cancer	120	3	2019 Feb	286-293	Br J Cancer

URL

Abstract Text

This phase I, open-label, dose-escalation study evaluated the safety, pharmacokinetics and pharmacodynamics of combination therapy with the HDM2 inhibitor SAR405838 and the MEK1/2 inhibitor pimasertib administered orally once daily (QD) or twice daily (BID) in locally advanced or metastatic solid tumours (NCT01985191).Patients with locally advanced or metastatic solid tumours with documented wild-type TP53 and RAS or RAF mutations were enroled. A 3 + 3 dose-escalation design was employed. The primary objective was to assess maximum tolerated dose (MTD).Twenty-six patients were treated with SAR405838 200 or 300 mg QD plus pimasertib 60 mg QD or 45 mg BID. The MTD was SAR405838 200 mg QD plus pimasertib 45 mg BID. The most common dose-limiting toxicity was thrombocytopenia. The most frequently occurring treatment-related adverse events were diarrhoea (81%), increased blood creatine phosphokinase (77%), nausea (62%) and vomiting (62%). No significant drug-drug interactions were observed. The biomarkers MIC-1 and pERK were, respectively, upregulated and downregulated in response to study treatment. In 24 efficacy-evaluable patients, one patient (4%) had a partial response and 63% had stable disease.The safety profile of SAR405838 and pimasertib combined was consistent with the safety profiles of both drugs. Preliminary antitumour activity was observed.

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials
SAR405838	SAR405838	5	1

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description
SAR405838		MI-77301\|MI-773\|MI773\|SAR-405838	MDM2 Inhibitor 22	SAR405838 (MI-77301) binds to MDM2 and inhibits MDM2-p53 interaction, resulting in activation of wild-type p53 signaling and decreased tumor growth (PMID: 25145672, PMID: 30585255, PMID: 31619389).

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References
NRAS mut TP53 wild-type	Advanced Solid Tumor	predicted - sensitive	Pimasertib + SAR405838	Phase I	Actionable	In a Phase I trial, SAR405838 and Pimasertib (MSC1936369B) combination therapy demonstrated safety and preliminary efficacy, resulted in partial response in 4% (1/24) and stable disease in 63% (15/24) of patients with TP53 wild-type advanced solid tumors harboring RAS/RAF mutations (KRAS, n=24; BRAF, n=1; NRAS, n=1) (PMID: 30585255; NCT01985191).	30585255
BRAF mut TP53 wild-type	Advanced Solid Tumor	predicted - sensitive	Pimasertib + SAR405838	Phase I	Actionable	In a Phase I trial, SAR405838 and Pimasertib (MSC1936369B) combination therapy demonstrated safety and preliminary efficacy, resulted in partial response in 4% (1/24) and stable disease in 63% (15/24) of patients with TP53 wild-type advanced solid tumors harboring RAS/RAF mutations (KRAS, n=24; BRAF, n=1; NRAS, n=1) (PMID: 30585255; NCT01985191).	30585255