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袁 晴, 韩 亚, 潘 慈, 汤 静, 高 怡. [Analysis of 41 cases of non-metastatic Ewing's sarcoma in children]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2024; 26:365-370. [PMID: 38660900 PMCID: PMC11057292 DOI: 10.7499/j.issn.1008-8830.2309077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/12/2024] [Indexed: 04/26/2024]
Abstract
OBJECTIVES To summarize the clinical characteristics, treatment outcomes, and prognostic factors of children with non-metastatic Ewing's sarcoma (ES). METHODS A retrospective analysis was conducted on the clinical data of 41 children with non-metastatic ES diagnosed and treated at the Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine from January 2010 to December 2018. All patients underwent chemotherapy based on the RMS-2009 protocol of the center, and local treatment such as surgery and/or radiotherapy was performed according to risk grouping. The Kaplan-Meier method was used to calculate the overall survival (OS) and event-free survival (EFS) rates. Univariate prognostic analysis was performed using the log-rank test, and multivariate analysis was conducted with Cox regression. RESULTS Of the 41 children, 21 were male and 20 were female. The median age at diagnosis was 7.7 years (range: 1.2-14.6 years). The median follow-up time for patients with event-free survival was 68.1 months (range: 8.1-151.7 months). As of the last follow-up, 33 patients were in complete remission, and the overall 5-year EFS and OS rates were (78±6)% and (82±6)%, respectively. Univariate analysis by the log-rank test showed that a tumor diameter ≥8 cm, time from diagnosis to start of local treatment ≥16 weeks, and incomplete surgical resection were associated with poor prognosis (P<0.05). Multivariate Cox regression analysis indicated that incomplete surgical resection (HR=8.381, 95%CI: 1.681-41.801, P=0.010) was an independent risk factor for poor prognosis in children with ES. Secondary tumors occurred in 2 cases. CONCLUSIONS A comprehensive treatment strategy incorporating chemotherapy, surgery, and radiotherapy can improve the prognosis of children with ES. Poor prognosis is associated with an initial tumor diameter ≥8 cm, while complete surgical resection and early initiation of local treatment can improve outcomes.
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Saenger JA, Tahir I, Födinger M, Cote GM, Muniappan A, Fintelmann FJ. Multimodality local ablative therapy of 23 lung metastases with surgical resection and percutaneous cryoablation in a patient with Li-Fraumeni Syndrome: A case report. Radiol Case Rep 2023; 18:3586-3591. [PMID: 37577077 PMCID: PMC10415826 DOI: 10.1016/j.radcr.2023.07.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 07/20/2023] [Indexed: 08/15/2023] Open
Abstract
Patients with Li-Fraumeni syndrome (LFS) are prone to develop a variety of malignancies due to insufficient activity of the encoded tumor suppressor protein P53, including adrenocortical carcinoma, breast cancer, lung cancer, pancreatic cancer, and sarcoma. In the setting of LFS, local treatment options for lung metastases are limited to surgery and thermal ablation since radiotherapy and some systemic therapies predispose patients to additional future malignancies. We present the case of a 45-year-old woman with LFS with leiomyosarcoma metastases to both lungs who underwent bilateral wedge resections to treat a total of eight lung metastases followed by six percutaneous cryoablation sessions to treat 15 additional lung metastases over a period of 24 months. Our case demonstrates the option of multimodal local ablative therapies for lung metastases in patients with LFS, including percutaneous cryoablation.
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Affiliation(s)
- Jonathan A. Saenger
- Department of Radiology, Division of Thoracic Imaging and Intervention, Massachusetts General Hospital, Boston, MA, USA
- Department of Radiology, Medical School, Sigmund Freud University, Vienna, Austria
- Diagnostic and interventional Radiology, University Hospital Zurich, University Zurich, Switzerland
| | - Ismail Tahir
- Department of Radiology, Division of Thoracic Imaging and Intervention, Massachusetts General Hospital, Boston, MA, USA
| | - Manuela Födinger
- Department of Radiology, Medical School, Sigmund Freud University, Vienna, Austria
- Institute of Laboratory Diagnostics, Klinik Favoriten, Vienna, Austria
| | - Gregory M. Cote
- Department of Oncology, Massachusetts General Hospital, Boston, MA, USA
| | - Ashok Muniappan
- Department of Surgery, Division of Thoracic Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Florian J. Fintelmann
- Department of Radiology, Division of Thoracic Imaging and Intervention, Massachusetts General Hospital, Boston, MA, USA
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Razik M, Rozwadowska P, Koclęga A, Helbig G. Double Malignancy and Double Transplant-A Bumpy Road to Success. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1209. [PMID: 37512021 PMCID: PMC10384397 DOI: 10.3390/medicina59071209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023]
Abstract
The occurrence of secondary neoplasms in adult patients treated with chemotherapy in childhood is not uncommon. Prior chemotherapy is found to be an independent risk factor for the development of secondary malignancies, which are usually associated with a worse prognosis. The presented case is a 35-year-old female patient who was diagnosed with Ewing sarcoma in her late adolescence. The tumor was successfully treated with chemotherapy, but 3 years later she was diagnosed with T-cell lymphoblastic lymphoma. The patient received allogeneic hematopoietic stem cell transplantation (allo-HSCT) from human leukocyte antigen (HLA) matched related donor. The procedure was complicated by grade 2 acute graft-versus-host disease (GvHD) which resolved after implementation of immunosuppressive treatment. However, a year later, the patient developed extensive chronic GvHD (cGvHD) and required reintroduction of immunosuppressants. Prolonged immunosuppressive treatment with tacrolimus led to irreversible kidney failure. After a 2-year period of regular peritoneal dialysis, she was found to be eligible for a kidney transplant from a deceased donor. Now, 15 years after stem cell transplantation and 8 years after kidney transplantation, the patient remains in good condition overall, presenting with symptoms of limited cGvHD. The case described here presents a unique clinical scenario of a female patient who was successfully treated for her double malignancy. Moreover, she underwent effective double transplantations and was eventually found to be cured despite accompanying complications.
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Affiliation(s)
- Michał Razik
- Students' Research Group, Department of Hematology and Bone Marrow Transplantation, Faculty of Medicine in Katowice, Medical University of Silesia, 40-055 Katowice, Poland
| | - Patrycja Rozwadowska
- Students' Research Group, Department of Hematology and Bone Marrow Transplantation, Faculty of Medicine in Katowice, Medical University of Silesia, 40-055 Katowice, Poland
| | - Anna Koclęga
- Department of Hematology and Bone Marrow Transplantation, Faculty of Medicine in Katowice, Medical University of Silesia, 40-055 Katowice, Poland
| | - Grzegorz Helbig
- Department of Hematology and Bone Marrow Transplantation, Faculty of Medicine in Katowice, Medical University of Silesia, 40-055 Katowice, Poland
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Petrone G, Gaulin C, Derkach A, Kishtagari A, Robson ME, Parameswaran R, Stein EM. Routine clinical parameters and laboratory testing predict therapy-related myeloid neoplasms after treatment for breast cancer. Haematologica 2023; 108:161-170. [PMID: 35770528 PMCID: PMC9827166 DOI: 10.3324/haematol.2021.280437] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Indexed: 02/05/2023] Open
Abstract
We aim to identify predictors of therapy-related myeloid neoplasms (t-MN) in patients with breast cancer (BC) and cytopenias to determine the timing of bone marrow biopsy (BMBx). Patients with BC and cytopenias who were referred for BMBx between 2002-2018 were identified using the Memorial Sloan Kettering Cancer Center institutional database. Characteristics associated with the risk of t-MN were evaluated by multivariable logistic regression and included in a predictive model. The average area under the receiver operating characteristic curve (AUC) was estimated by 5-fold cross-validation. Of the 206 BC patients who underwent BMBx included in our study, 107 had t-MN. By multivariable analysis, white blood cell count 4-11 K/mcL, absolute neutrophil count (ANC) ≥1.5 K/mcL, hemoglobin ≥12.2 g/dL, red cell distribution width 11.5-14.5%, the presence of bone metastasis and a time from BC diagnosis to BMBx <15 months significantly decreased the likelihood of t-MN. The average AUC was 0.88. We stratified our cohort by bone metastasis and by findings on peripheral smear. In both the subset without bone metastasis (n=159) and in the cohort with no blasts or dysplastic cells on peripheral smear (n=96) our variables had similar effects on the risk of t-MN. Among the 47 patients with bone metastasis, an ANC ≥1.5 K/mcL was the only variable associated with a decreased risk of t-MN. Our findings show that in patients with BC and unexplained cytopenias, clinical and laboratory parameters can predict t-MN and assist clinicians in determining the timing of a BMBx.
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Affiliation(s)
- Giulia Petrone
- Department of Medicine, Mount Sinai Morningside and Mount Sinai West, New York, NY
| | - Charles Gaulin
- Division of Hematology and Medical Oncology, Mayo Clinic, Phoenix
| | - Andriy Derkach
- Department of Biostatistics and Epidemiology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Ashwin Kishtagari
- Division of Hematology and Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Mark E Robson
- Breast Medicine Service, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Rekha Parameswaran
- Division of Hematology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Eytan M Stein
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY.
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Ha H, Kim HJ, Park JH, Shin A, Lee KN, Han K, Lee NR, Hong J. Epidemiologic outlook of therapy-related myeloid neoplasms and selection of high-risk patients: A Korean nationwide study. Cancer 2022; 128:3888-3896. [PMID: 36069361 DOI: 10.1002/cncr.34453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/19/2022] [Accepted: 08/01/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Although a considerable proportion of patients with cancer receive chemotherapy (CT) or radiotherapy (RT), only a very few patients eventually develop therapy-related myeloid neoplasms (t-MNs). METHODS To identify subsets of cancer patients who have substantially elevated risk of developing t-MNs. Incidences and risks of t-MNs after contemporary CT or RT in patients newly diagnosed major cancers during 2009-2013 were analyzed. By merging two Korean nationwide health care big data sets, patients were selected and observed on follow-up to until t-MN development or December 2019. RESULTS Among 250,155 patients, 555 (0.22%) were diagnosed with t-MNs with a standard incidence ratio (SIR) of 3.40 (95% CI, 3.13-3.70). Patients had bone/joint cancers (SIR, 94.25; 95% CI, 50.71-137.80) and a remarkably high SIR for t-MN development. Patients receiving both CT and RT had the highest SIR (4.64; 95% CI, 4.08-5.20), followed by those receiving CT only (SIR, 3.30; 95% CI, 2.89-3.70). Contrarily, RT alone did not increase t-MN risk (SIR, 1.16; 95% CI, 0.76-1.56). More exposure to leukemogenic agents resulted in the higher t-MNs development. CONCLUSIONS The increased risk of developing acute myeloid leukemia or myelodysplastic syndrome after CT and/or RT was confirmed and subsets with substantially elevated risk for developing t-MNs were found. Such patients would be suitable for a prospective cohort for investigating t-MN pathogenesis by time series analyses.
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Affiliation(s)
- Hyerim Ha
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Internal Medicine, Inha University College of Medicine, Incheon, Republic of Korea
| | - Hyo Jeong Kim
- National Evidence-based Healthcare Collaborating Agency (NECA), Seoul, South Korea
| | - Ju Hyun Park
- Korea Institute for Health and Social Affairs (KIHASA), Sejong-si, South Korea
| | - Aesun Shin
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.,Integrated Major in Innovative Medical Science, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kyu Na Lee
- Department of Statistics and Actuarial Science, Soongsil University, Seoul, Republic of Korea
| | - Kyungdo Han
- Department of Statistics and Actuarial Science, Soongsil University, Seoul, Republic of Korea
| | - Na Rae Lee
- National Evidence-based Healthcare Collaborating Agency (NECA), Seoul, South Korea
| | - Junshik Hong
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.,Biomedical Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
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Tringale KR, Casey DL, Niyazov G, Lavery JA, Moskowitz C, Friedman DN, Wolden SL. Second cancer risk in childhood cancer survivors treated with intensity-modulated radiation therapy: An updated analysis of more than 10 years of follow-up. Pediatr Blood Cancer 2022; 69:e29600. [PMID: 35234340 PMCID: PMC9476885 DOI: 10.1002/pbc.29600] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/24/2022] [Accepted: 01/29/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND It is unclear how intensity-modulated radiation therapy (IMRT) impacts long-term risk of second malignant neoplasms (SMNs) in childhood cancer patients. PROCEDURE Patients aged ≤21 years treated with IMRT between 1998 and 2009 and who survived ≥5 years after IMRT were included. SMN site in relation to isodose level (IDL) of IMRT was evaluated. Standardized incidence ratios (SIR) and excess absolute risks (EAR) were calculated. Cumulative incidences were estimated with death as a competing risk. RESULTS Three-hundred twenty-five patients were included with median follow-up of 11.2 years from IMRT (interquartile range: 9.4-14.0) among patients alive at the end of follow-up. Two hundred (62%) patients had ≥10 years of follow-up and 284 (87%) patients were alive at the time of analysis. Fifteen patients developed SMNs (11 solid, four hematologic). Median time from IMRT to solid SMN was 11.0 years (range: 6.8-19.2) with 10- and 15-year cumulative incidences 1.8% (95% CI: 0.7-3.9) and 3.5% (95% CI: 1.4-7.5), respectively; SIR was 13.7 (95% CI: 6.9-24.6) and EAR was 2.8 per 1000 person-years (95% CI: 1.0-4.6). Eight solid SMNs developed within the IMRT field (100% IDL [n = 5], 80% IDL [n = 1], 50% IDL [n = 1], 40% IDL [n = 1]), one within the 70%-80% IDL of a conventional field, one was out-of-field, and one could not be determined. CONCLUSIONS With median follow-up of >10 years, many solid SMNs after IMRT in childhood cancer survivors develop in the high-dose region. These data serve as a foundation for comparison with other modalities of radiation treatment (e.g., proton therapy).
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Affiliation(s)
| | - Dana L. Casey
- Department of Radiation Oncology, University of North Carolina
| | - Gregory Niyazov
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center
| | - Jessica A. Lavery
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center
| | - Chaya Moskowitz
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center
| | | | - Suzanne L. Wolden
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center
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Crisci S, Pota E, Iaccarino G, Postiglione I, Meo C, Mele S, De Filippi R, Pinto A. Childhood Therapy-Related Acute Myeloid Leukemia with t(16;21)(q24;q22)/RUNX1-CBFA2T3 After a Primitive Neuroectodermal Tumor of the Chest Wall. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2020; 20:e660-e666. [PMID: 32651109 DOI: 10.1016/j.clml.2020.05.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/19/2020] [Accepted: 05/21/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Stefania Crisci
- Hematology-Oncology and Stem-Cell Transplantation Unit, Department of Hematology and Developmental Therapeutics, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Naples, Italy.
| | - Elvira Pota
- Pediatric Hematology-Oncology Unit, Department of Pediatrics, AOU, Università della Campania "Luigi Vanvitelli", Naples, Italy
| | - Giancarla Iaccarino
- Hematology-Oncology and Stem-Cell Transplantation Unit, Department of Hematology and Developmental Therapeutics, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Naples, Italy
| | - Irene Postiglione
- Hematology-Oncology and Stem-Cell Transplantation Unit, Department of Hematology and Developmental Therapeutics, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Naples, Italy
| | - Concetta Meo
- Hematology-Oncology and Stem-Cell Transplantation Unit, Department of Hematology and Developmental Therapeutics, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Naples, Italy
| | - Sara Mele
- Hematology-Oncology and Stem-Cell Transplantation Unit, Department of Hematology and Developmental Therapeutics, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Naples, Italy
| | - Rosaria De Filippi
- Hematology-Oncology and Stem-Cell Transplantation Unit, Department of Hematology and Developmental Therapeutics, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Naples, Italy; Department of Clinical Medicine and Surgery, Università degli Studi Federico II, Naples, Italy
| | - Antonio Pinto
- Hematology-Oncology and Stem-Cell Transplantation Unit, Department of Hematology and Developmental Therapeutics, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Naples, Italy
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Caruso J, Shulman DS, DuBois SG. Second malignancies in patients treated for Ewing sarcoma: A systematic review. Pediatr Blood Cancer 2019; 66:e27938. [PMID: 31347793 DOI: 10.1002/pbc.27938] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/07/2019] [Accepted: 07/10/2019] [Indexed: 01/16/2023]
Abstract
The therapies used to treat Ewing sarcoma are associated with a risk of second malignant neoplasm (SMN). We conducted a systematic review to pool available evidence on the risks, types, and outcomes after SMN. We obtained 52 articles that met inclusion criteria. Cumulative incidence rates of SMN ranged from 0.9 to 8.4% and 10.1 to 20.5% at 5 and 30 years after initial diagnosis. Of the 327 reported SMNs, 63.6% were solid tumors, although acute myeloid leukemia /myelodysplastic syndrome was the single most commonly diagnosed SMN, with generally poor outcomes. Patients treated for Ewing sarcoma are at substantial risk of SMN, with a broad range of reported secondary cancers.
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Affiliation(s)
| | - David S Shulman
- Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, Massachusetts
| | - Steven G DuBois
- Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, Massachusetts
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Lu E, Ryan CW, Bassale S, Lim JY, Davis LE. Feasibility of Treating Adults with Ewing or Ewing-Like Sarcoma with Interval-Compressed Vincristine, Doxorubicin, and Cyclophosphamide Alternating with Ifosfamide and Etoposide. Oncologist 2019; 25:150-155. [PMID: 32043790 DOI: 10.1634/theoncologist.2019-0532] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 08/21/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Vincristine, doxorubicin, and cyclophosphamide (VDC) alternating with ifosfamide and etoposide (IE) administered every 2 weeks demonstrated a superior event-free survival compared with 3-week dosing in a landmark pediatric trial and is now standard of care for younger patients. Only 12% of patients enrolled in that trial were over 18 years of age; thus, the feasibility of interval-compressed VDC/IE in adults remains poorly described. We conducted a retrospective analysis of our institutional experience using this regimen. MATERIALS AND METHODS Pharmacy administration records at Oregon Health and Science University were reviewed to identify patients with Ewing and Ewing-like sarcoma aged 18 years and older who received VDC/IE every 2 weeks. RESULTS We identified 24 patients. Median age was 28 years (range 18-60 years). At diagnosis, 67% had localized disease. The most common primary sites were extremity (38%) and pelvis (17%); another 25% had extraosseous disease. The median interval between cycles was 15.0 days, with no difference between patients aged <30 years versus ≥30 years. The median number of admissions for toxicity per patient was two, primarily for febrile neutropenia. Early treatment discontinuation occurred in 17%. Dose reductions were minimal, with mean cumulative doses achieved comparable to original planned dose and no difference between patients aged <30 years versus ≥30 years. CONCLUSION For adults with Ewing and Ewing-like sarcoma, administration of interval-compressed chemotherapy is feasible, without significant dose reductions required. Our results are comparable to prior studies involving a primarily pediatric population. IMPLICATIONS FOR PRACTICE For Ewing sarcoma, interval-compressed vincristine, doxorubicin, and cyclophosphamide alternating with ifosfamide and etoposide administered every 2 weeks rather than every 3 weeks has been shown to improve event-free survival in pediatric patients. However, in adults, oncologists may be hesitant to pursue interval-compressed therapy because of concerns for feasibility. In the adult population in this study, a median interval between cycles of 15.0 days (mean 17.0 days) was achieved, comparable to the interval achieved in AEWS0031 (median 15.0, mean 17.3 days). Given that this was achieved without unexpected toxicity or substantial dose reductions and that clinical outcomes were favorable compared with adult historical controls, these results support the use of this regimen in adults.
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Affiliation(s)
- Eric Lu
- Division of Medical Oncology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Christopher W Ryan
- Division of Medical Oncology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Solange Bassale
- Biostatistics Shared Resource, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Jeong Youn Lim
- Biostatistics Shared Resource, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Lara E Davis
- Division of Medical Oncology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Oregon Health & Science University, Portland, Oregon, USA
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