Volume 70, Issue 9 e30466
BRIEF REPORT

A pilot study evaluating the use of sirolimus in children and young adults with desmoid-type fibromatosis

Aaron R. Weiss

Corresponding Author

Aaron R. Weiss

Division of Hematology/Oncology, Department of Pediatrics, Maine Medical Center, Portland, Maine, USA

Correspondence

Aaron Weiss, Department of Pediatrics, Division of Pediatric Hematology-Oncology, Maine Medical Center, 22 Bramhall St, Portland, ME 04102, USA.

Email: [email protected]

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Sarah Dry

Sarah Dry

Department of Pathology Bone, Soft Tissue and GI Pathology, University of California Los Angeles, Los Angeles, California, USA

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Clara Maygar

Clara Maygar

Department of Pathology Bone, Soft Tissue and GI Pathology, University of California Los Angeles, Los Angeles, California, USA

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Anya Cutler

Anya Cutler

MaineHealth Institute for Research, Portland, Maine, USA

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Christine W. Lary

Christine W. Lary

Roux Institute and the Bouve College of Health Sciences at Northeastern University, Portland, Maine, USA

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Carmen Khoo

Carmen Khoo

MaineHealth Institute for Research, Portland, Maine, USA

Deceased.

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Jillian E. Fergione

Jillian E. Fergione

Division of Hematology/Oncology, Department of Pediatrics, Maine Medical Center, Portland, Maine, USA

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Melanie M. Hounchell

Melanie M. Hounchell

Division of Hematology/Oncology, Department of Pediatrics, Maine Medical Center, Portland, Maine, USA

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Kathleen Glick

Kathleen Glick

Division of Hematology/Oncology, Department of Pediatrics, Maine Medical Center, Portland, Maine, USA

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Meghen Browning

Meghen Browning

Division of Hematology/Oncology, Department of Pediatrics, Children's Hospital of Wisconsin, Milwaukee, Wisconsin, USA

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Sun Ha Choo

Sun Ha Choo

Division of Hematology/Oncology, Department of Pediatrics, Rady Children's Hospital, San Diego, California, USA

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Douglas S. Hawkins

Douglas S. Hawkins

Division of Hematology/Oncology, Department of Pediatrics, Seattle Children's Hospital, University of Washington School of Medicine, Seattle, Washington, USA

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Joanne Lagmay

Joanne Lagmay

Division of Hematology/Oncology, Department of Pediatrics, University of Florida Health Science Center, Gainesville, Florida, USA

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Michelle Manalang

Michelle Manalang

Department of Pediatrics, Marshfield Marshfield Medical Center, Marshfield, Wisconsin, USA

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Stephen X. Skapek

Stephen X. Skapek

Division of Hematology/Oncology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, USA

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Brenda Weigel

Brenda Weigel

Division of Hematology/Oncology, Department of Pediatrics, University of Minnesota/Masonic Cancer Center, Minneapolis, Minnesota, USA

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Stephanie Verwys

Stephanie Verwys

Division of Hematology/Oncology, Department of Pediatrics, Maine Medical Center, Portland, Maine, USA

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Noah Federman

Noah Federman

Departments of Pediatrics and Orthopaedic Surgery, David Geffen School of Medicine, University of California, Los Angeles, California, USA

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First published: 07 June 2023

The findings within this study were presented as an oral abstract at the annual Desmoid Tumor Research Foundation Meeting in September 2018, Philadelphia, PA, USA.

Abstract

Deregulation of the mTOR pathway may play an important role in tumor biology when the APC/β-catenin pathway is disrupted in desmoid-type fibromatosis (DT). A pilot study was conducted to determine whether sirolimus can block the mTOR pathway (primary aim) as well as determine whether it can safely be given in the preoperative setting, decrease tumor size/recurrence, and decrease tumor-associated pain in children and young adults (secondary aims) with DT. Nine subjects ages 5–28 years were enrolled from 2014 to 2017 across four centers. Sirolimus was feasible and was associated with a nonstatistically significant decrease in pS706K activation.

CONFLICT OF INTEREST STATEMENT

Aaron R. Weiss is chair of the Desmoid Tumor Research Foundation Medical Advisory Board, is on the medical advisory board for SpringWorks Therapeutics (no honoraria), and is a paid consultant for BioAtla. Noah Federman has received speaking and advisory honoraria from Bayer AG. Noah Federman receives grant support from NCI/NCATS CTSA and CIRM.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.