Phase III Trial of YONDELIS® (trabectedin) in Advanced Soft Tissue Sarcoma

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https://medicalresearch.com/cancer-_-oncology/phase-iii-trial-of-yondelis-trabectedin-in-advanced-soft-tissue-sarcoma/42044/

MedicalResearch.com Interview with:

Axel Le Cesne, MD Institute de Cancerologie Gustave-Roussy Villejuif, France

Dr. Le Cesne

Axel Le Cesne, MD
Institute de Cancerologie Gustave-Roussy
Villejuif, France

MedicalResearch.com: What is the background for this study? What are the main findings?

Response: With the exception of a study in translocation-related sarcomas (TRS) (Kawai, TLO 2015), trabectedin was never compared to best supportive care (BSC) in a randomized study in patients with all STS histotypes. This trial required by French Health Authorities in 2014.

The tumor control rate after 6 cycles of trabectedin is similar (30%) to previous study in French referral centers (T-DIS trial, Le Cesne, Lancet Oncol 2015) evaluating trabectedin in all subtypes of STS. As already reported, trabectedin was well tolerated with no cumulative toxicities

This study met its first endpoint as a preplanned PFS analysis showed a significant improvement in median PFS with trabectedin  over BSC in patients with pretreated ASTS including multiple histologies (HR: 0.39). A major impact of trabectedin was observed in the L-STS cohort (liposarcomas and leiomyosarcomas) with a median PFS of 1.4 months in the BSC arm and 5.13 m (HR: 0.29, p<0.0001) in the trabectedin arm. respectively). The benefit observed with trabectedin in the L-STS cohort of patients is similar to those observed in the US trial in the same population (4.2 vs 1.5m for DTIC) (Demetri, JCO 2016) and in the Japanese trial mentioned above (5.8 vs 0.9m for BSC) (Kawai, TLO 2015)

After the crossing over allowed by the protocol (trabectedin for patients progressing in the BSC arm), safety and efficacy profiles of trabectedin remains similar. We did not observe a difference in terms of OS between the two arms, probably due to the cross-over planned by the protocol. MedicalResearch.com: What recommendations do you have for future research as a result of this work?

 1)      To understand why L-sarcomas are more sensitive to trabectedine than other subtypes.

2)      To identify predictive biomarkers of sensibility to trabectedin in other histological subtypes of sarcomas.

3)      To early identify patients long responding patients to trabectedin. 

Citations:

ASCO 2018 abstract:

Results of a prospective randomized phase III T-SAR trial comparing trabectedin (T) vs best supportive care (BSC) in patients with pretreated advanced soft tissue sarcoma (ASTS): A French Sarcoma Group (FSG) trial
http://abstracts.asco.org/214/AbstView_214_227341.html

 

 

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