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Clinical Trial Summary

To assess the safety and tolerability profile, in the pre- and perioperative period (up to 30 days post-surgery), of combined modality treatment (CMT) by administering DDRi and RT concurrently treating newly diagnosed, non-metastatic soft tissue sarcoma patients with DDRi-based CMT, in the specific context of systemic toxicities, wound healing post-surgery and in defining the RP2D for the combinations to support further clinical evaluation.


Clinical Trial Description

Despite improvements in surgery and radiation for soft tissue sarcoma (STS) patients, local relapses remain an important event for these patients. Most STS subtypes are considered radioresistant. Investigations into radiosensitization mediated by combining systemic compounds with neoadjuvant radiotherapy (RT) may translate into an increased rate of pathological responses, an increased rate of R0 resections and thus fewer local relapses. RT is highly potent in inducing DNA damage. Normal cells are usually sufficiently able to repair this damage timely before the next fraction because of an intact DNA Damage Response (DDR) pathway. Frequently, tumor cells have (partial or complete) defects in the DDR pathways rendering them more sensitive to radiation than normal tissues. Inhibition of constituents of the DDR pathways may further widen the therapeutic window of fractionated RT. Clinical studies into radiosensitization of STS by combinations of RT and DDR inhibitors are warranted. In this study the candidate inhibitors are the new drugs AZD1390 and AZD7648, targeting ATM (Ataxia Telangiectasia Mutated) and DNA-dependent protein kinase PK, respectively. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05116254
Study type Interventional
Source The Netherlands Cancer Institute
Contact Rick Haas, MD PhD
Phone +31205129111
Email [email protected]
Status Not yet recruiting
Phase Phase 1
Start date March 1, 2022
Completion date March 1, 2024

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