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Lucas JT, Pappo AS. Optimal dosing of cyclophosphamide in rhabdomyosarcoma: It's complicated. Cancer 2019; 125:3107-3110. [PMID: 31174230 DOI: 10.1002/cncr.32205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 05/04/2019] [Indexed: 12/31/2022]
Affiliation(s)
- John T Lucas
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Alberto S Pappo
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
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Arnold MA, Anderson JR, Gastier-Foster JM, Barr FG, Skapek SX, Hawkins DS, Raney RB, Parham DM, Teot LA, Rudzinski ER, Walterhouse DO. Histology, Fusion Status, and Outcome in Alveolar Rhabdomyosarcoma With Low-Risk Clinical Features: A Report From the Children's Oncology Group. Pediatr Blood Cancer 2016; 63:634-9. [PMID: 26756883 PMCID: PMC4755849 DOI: 10.1002/pbc.25862] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 10/22/2015] [Accepted: 11/02/2015] [Indexed: 12/24/2022]
Abstract
BACKGROUND Distinguishing alveolar rhabdomyosarcoma (ARMS) from embryonal rhabdomyosarcoma (ERMS) is of prognostic and therapeutic importance. Criteria for classifying these entities evolved significantly from 1995 to 2013. ARMS is associated with inferior outcome; therefore, patients with alveolar histology have generally been excluded from low-risk therapy. However, patients with ARMS and low-risk stage and group (Stage 1, Group I/II/orbit III; or Stage 2/3, Group I/II) were eligible for the Children's Oncology Group (COG) low-risk rhabdomyosarcoma (RMS) study D9602 from 1997 to 1999. The characteristics and outcomes of these patients have not been previously reported, and the histology of these cases has not been reviewed using current criteria. PROCEDURE We re-reviewed cases that were classified as ARMS on D9602 using current histologic criteria, determined PAX3/PAX7-FOXO1 fusion status, and compared these data with outcome for this unique group of patients. RESULTS Thirty-eight patients with ARMS were enrolled onto D9602. Only one-third of cases with slides available for re-review (11/33) remained classified as ARMS by current histologic criteria. Most cases were reclassified as ERMS (17/33, 51.5%). Cases that remained classified as ARMS were typically fusion-positive (8/11, 73%), therefore current classification results in a similar rate of fusion-positive ARMS for all clinical risk groups. In conjunction with data from COG intermediate-risk treatment protocol D9803, our data demonstrate excellent outcomes for fusion-negative ARMS with otherwise low-risk clinical features. CONCLUSIONS Patients with fusion-positive RMS with low-risk clinical features should be classified and treated as intermediate risk, while patients with fusion-negative ARMS could be appropriately treated with reduced intensity therapy.
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Affiliation(s)
- Michael A. Arnold
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, OH,Department of Pathology, The Ohio State University College of Medicine, Columbus, OH,Correspondence to: Michael A. Arnold, MD, PhD, Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH 43205, Phone: 614-722-5719,
| | | | - Julie M. Gastier-Foster
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, OH,Department of Pathology, The Ohio State University College of Medicine, Columbus, OH
| | - Frederic G. Barr
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD
| | - Stephen X. Skapek
- Department of Hematology and Oncology, UT Southwestern Medical Center, Dallas, TX
| | - Douglas S. Hawkins
- Department of Pediatrics, Seattle Children's Hospital, Seattle, WA,Fred Hutchinson Cancer Research Center and University of Washington, Seattle, WA
| | - R. Beverly Raney
- Children's Cancer Hospital and Division of Pediatrics, UT MD Anderson Cancer Center, Houston, TX
| | - David M. Parham
- Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles and Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Lisa A. Teot
- Department of Pathology, Boston Children's Hospital, Boston, MA
| | - Erin R. Rudzinski
- Department of Laboratories, Seattle Children's Hospital, Seattle, WA
| | - David O. Walterhouse
- Division of Hematology, Oncology, and Stem Cell Transplantation. Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL
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