A Nationwide Prospective Clinical Trial on Active Surveillance in Patients with Non-Intra-Abdominal Desmoid-Type Fibromatosis

Autor: Anne-Rose W. Schut, Milea J. M. Timbergen, Danique L. M. van Broekhoven, Thijs van Dalen, Winan J. van Houdt, Johannes J. Bonenkamp, Stefan Sleijfer, Dirk J. Grunhagen, Cornelis Verhoef
Přispěvatelé: Surgery, Medical Oncology, Orthopedics and Sports Medicine
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Annals of Surgery, 277, 4, pp. 689-696
Annals of Surgery, 277(4), 689-696. Lippincott Williams & Wilkins
Annals of Surgery, 277, 689-696
ISSN: 1528-1140
0003-4932
DOI: 10.1097/SLA.0000000000005415
Popis: Contains fulltext : 291068.pdf (Publisher’s version ) (Open Access) OBJECTIVE: To assess tumor behavior and the efficacy of active surveillance (AS) in patients with desmoid-type fibromatosis (DTF). SUMMARY OF BACKGROUND DATA: AS is recommended as initial management for DTF patients. Prospective data regarding the results of AS are lacking. METHODS: In this multicenter prospective cohort study (NTR4714), adult patients with non-intraabdominal DTF were followed during an initial AS approach for 3 years. Tumor behavior was evaluated according to Response Evaluation Criteria in Solid Tumors. Cumulative incidence of the start of an active treatment and progression-free survival (PFS) were calculated using the Kaplan-Meier method. Factors predictive for start of active treatment were assessed by Cox regression analyses. RESULTS: A total of 105 patients started with AS. Median tumor size at baseline was 4.1cm (interquartile range 3.0-6.6). Fifty-seven patients had a T41A CTNNB1 mutation; 14 patients a S45F CTNNB1 mutation. At 3 years, cumulative incidence of the start of active treatment was 30% (95% confidence interval [CI] 21-39) and PFS was 58% (95% CI 49-69). Median time to start active treatment and PFS were not reached at a median follow-up of 33.7 months. During AS, 32% of patients had stable disease, 28% regressed, and 40% demonstrated initial progression. Larger tumor size (≥5 cm; hazard ratio = 2.38 [95% CI 1.15-4.90]) and S45F mutation (hazard ratio = 6.24 [95% CI 1.92-20.30]) were associated with the start of active treatment. CONCLUSIONS: The majority DTF patients undergoing AS do not need an active treatment and experience stable or regressive disease, even after initial progression. Knowledge about the natural behavior of DTF will help to tailor the follow-up schedule to the individual patient.
Databáze: OpenAIRE
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