Reference Detail

Ref Type

Abstract

PMID

Authors

Yong Fang, Hongming Pan, Shun Lu, Hong Hu, Qin Lu

Title

A phase I study to evaluate safety, tolerability, pharmacokinetics, and preliminary antitumor activity of TQ-B3101.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Journal of Clinical Oncology	38	15_suppl	May 25, 2020

URL

https://ascopubs.org/doi/10.1200/JCO.2020.38.15_suppl.e21705

Abstract Text

Background: TQ-B3101 is a novel compound, which deacetylated metabolite targets to receptor tyrosine kinases including ALK, ROS1 and MET. Preclinical studies showed TQ-B3101 had a better Inhibition activity and duration compared with equimolar crizotinib. Methods: Patients (pts) with advanced solid tumor failed to standard therapy were enrolled into dose escalation and expansion cohorts. TQ-B3101 was orally administered at doses of 100~300mg QD or 200~350mg BID in a 28-day cycle, then received the same dose until disease progression or intolerable toxicity. Dose escalation was based on dose-limiting toxicities (DLTs) in the first cycle and used “3+3” design to get the maximal tolerated dose (MTD) or recommended phase II dose (RP2D). Other objectives included safety and pharmacokinetics (PK) for all pts, and objective response rate (ORR) for ALK+, ROS1+ and MET amplification pts. Results: As of 20 Dec 2019, 30 pts (median age 51.3, males: 16, females: 14, ALK+: 19, ROS1+: 6, MET amplification: 2, lung cancer: 27, asymptomatic brain metastasis: 8, ECOG PS 1: 30) were enrolled into 7 dose escalation cohorts and 2 dose expansion cohorts (350mg BID/ 300mg BID). One DLT (grade 3 ALT increased) occurred at 350 mg BID. The MTD has not been reached. The most common grade 3 adverse events were neutrophils count decreased (20%), ALT increased (6.67%), leucocyte counts decreased (3.33%) and QT internal prolongation (3.33%). Grade 3 adverse events rate were 40% in 350mg BID cohort and 16.67% in 300mg BID cohort. PK analyses indicated TQ-B3101 metabolized into its deacetylated product rapidly, and exposure (Cmax and AUC) of which generally increased in a dose-proportional manner. Tumor response was evaluated in 24 pts with ALK+/ROS1+/MET amplification. ORR were 62.5% (15/24) in all cohorts, and 87.5% (7/8) in 350mg BID cohort. In 8 pts with brain metastases at baseline, ORR was 62.5% (5/8) . In 22 pts without brain metastases at baseline, the incidence of brain metastasis was 4.55% (1/22). 1 patient with MET amplification is evaluable and the tumor response is PR. Conclusions: TQ-B3101 was well tolerated and showed preliminary antitumor activity in ALK+, ROS1+ and MET amplification pts. Recommended phase II dose (RP2D) might be 300mg BID according longtime safety data. Further anti-tumor research in pts with ROS1+ is under going as multicenter clinical study in China. (NCT03972189). Clinical trial information: NCT03019276.

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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

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

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
ROS1 rearrange	Advanced Solid Tumor	predicted - sensitive	TQ-B3101	Case Reports/Case Series	Actionable	In a Phase I trial, TQ-B3101 treatment was well tolerated and resulted in an objective response rate (ORR) of 62.5% (15/24) in patients with ALK-positive, ROS1-positive, or MET-amplified advanced solid tumors, with an ORR of 62.5% (5/8) in patients with brain metastases (J Clin Oncol 38, 2020 (suppl 15; abstr e21705); NCT03019276).	detail...
ALK rearrange	Advanced Solid Tumor	predicted - sensitive	TQ-B3101	Phase I	Actionable	In a Phase I trial, TQ-B3101 treatment was well tolerated and resulted in an objective response rate (ORR) of 62.5% (15/24) in patients with ALK-positive, ROS1-positive, or MET-amplified advanced solid tumors, with an ORR of 62.5% (5/8) in patients with brain metastases (J Clin Oncol 38, 2020 (suppl 15; abstr e21705); NCT03019276).	detail...