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Sung H, Nisotel L, Sedeta E, Islami F, Jemal A. Racial and Ethnic Disparities in Survival Among People With Second Primary Cancer in the US. JAMA Netw Open 2023; 6:e2327429. [PMID: 37540510 PMCID: PMC10403787 DOI: 10.1001/jamanetworkopen.2023.27429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/24/2023] [Indexed: 08/05/2023] Open
Abstract
Importance Comprehensive data for racial and ethnic disparities after second primary cancers (SPCs) are lacking despite the growing burden of SPCs. Objective To quantify racial and ethnic disparities in survival among persons with SPCs. Design, Setting, and Participants This population-based, retrospective cohort study used data from 18 Surveillance, Epidemiology, and End Results registries in the US for persons diagnosed with the most common SPCs at age 20 years or older from January 1, 2000, to December 31, 2013 (with follow-up through December 31, 2018). Data were analyzed between January and April 2023. Exposure Race and ethnicity (Hispanic, non-Hispanic Asian or Pacific Islander, non-Hispanic Black, and non-Hispanic White). Main Outcomes and Measures The main outcomes were 5-year relative survival and cause-specific survival. Cause-specific hazard ratios (HRs) were calculated for death from cancer or cardiovascular disease (CVD) in each racial and ethnic minority population compared with the White population overall and stratified by SPC type, with adjustment for sex, year and age at SPC diagnosis, and prior cancer type and stage (baseline model) and additionally for county attributes (household income, urbanicity), SPC characteristics (stage, subtype), and treatment. Results Among 230 370 persons with SPCs (58.4% male), 4.5% were Asian or Pacific Islander, 9.6% were Black, 6.4% were Hispanic, and 79.5% were White. A total of 109 757 cancer-related deaths (47.6%) and 18 283 CVD-related deaths (7.9%) occurred during a median follow-up of 54 months (IQR, 12-93 months). In baseline models, compared with the White population, the risk of cancer-related death overall was higher in the Black (HR, 1.21; 95% CI, 1.18-1.23) and Hispanic (HR, 1.10; 95% CI, 1.07-1.13) populations but lower in the Asian or Pacific Islander population (HR, 0.93; 95% CI, 0.90-0.96). When stratified by 13 SPC types, the risk of cancer-related death was higher for 10 SPCs in the Black population, with the highest HR for uterine cancer (HR, 1.87; 95% CI, 1.63-2.15), and for 7 SPCs in the Hispanic population, most notably for melanoma (HR, 1.46; 95% CI, 1.21-1.76). For CVD-related death, the overall HR was higher in the Black population (HR, 1.41; 95% CI, 1.34-1.49), with elevated risks evident for 11 SPCs, but lower in the Asian or Pacific Islander (HR, 0.75; 95% CI, 0.69-0.81) and Hispanic (HR, 0.90; 95% CI, 0.84-0.96) populations than in the White population. After further adjustments for county attributes and SPC characteristics and treatment, HRs were reduced for cancer-related death and for CVD-related death and associations in the same direction remained. Conclusions and Relevance In this cohort study of SPC survivors, the Black population had the highest risk of both death from cancer and death from CVD, and the Hispanic population had a higher risk of death from cancer than the White population. Attenuations in HRs after adjustment for potentially modifiable factors highlight opportunities to reduce survival disparities among persons with multiple primary cancers.
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Affiliation(s)
- Hyuna Sung
- Surveillance & Health Equity Science, American Cancer Society, Atlanta, Georgia
| | - Lauren Nisotel
- Surveillance & Health Equity Science, American Cancer Society, Atlanta, Georgia
| | - Ephrem Sedeta
- Department of Medicine, Brookdale University Hospital and Medical Center, Brooklyn, New York
| | - Farhad Islami
- Surveillance & Health Equity Science, American Cancer Society, Atlanta, Georgia
| | - Ahmedin Jemal
- Surveillance & Health Equity Science, American Cancer Society, Atlanta, Georgia
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Impact of social disparities on 10 year survival rates in paediatric cancers: a cohort study. LANCET REGIONAL HEALTH. AMERICAS 2023; 20:100454. [PMID: 36875264 PMCID: PMC9974417 DOI: 10.1016/j.lana.2023.100454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/19/2022] [Accepted: 02/06/2023] [Indexed: 03/07/2023]
Abstract
Background Studies reporting on the impact of social determinants of health on childhood cancer are limited. The current study aimed to examine the relationship between health disparities, as measured by the social deprivation index, and mortality in paediatric oncology patients using a population-based national database. Methods In this cohort study of children across all paediatric cancers, survival rates were determined using the Surveillance, Epidemiology, and End Results (SEER) database from 1975 to 2016. The social deprivation index was used to measure and assess healthcare disparities and specifically the impact on both overall and cancer-specific survival. Hazard ratios were used to assess the association of area deprivation. Findings The study cohort was composed of 99,542 patients with paediatric cancer. Patients had a median age of 10 years old (IQR: 3-16) with 46,109 (46.3%) of female sex. Based on race, 79,984 (80.4%) of patients were identified as white while 10,801 (10.9%) were identified as Black. Patients from socially deprived areas had significantly higher hazard of death overall for both non-metastatic [1.27 (95% CI: 1.19-1.36)] and metastatic presentations [1.09 (95% CI: 1.05-1.15)] compared to in more socially affluent areas. Interpretation Patients from the most socially deprived areas had lower rates of overall and cancer-specific survival compared to patients from socially affluent areas. With an increase in childhood cancer survivors, implementation of social determinant indices, such as the social deprivation index, might aid improvement in healthcare outcomes for the most vulnerable patients. Funding There was no study sponsor or extramural funding.
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Deng Z, Jones MR, Wang MC, Visvanathan K. Mortality after second malignancy in breast cancer survivors compared to a first primary cancer: a nationwide longitudinal cohort study. NPJ Breast Cancer 2022; 8:82. [PMID: 35835760 PMCID: PMC9283416 DOI: 10.1038/s41523-022-00447-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 06/13/2022] [Indexed: 11/17/2022] Open
Abstract
Limited information exists about survival outcomes after second primary cancers (SPCs) among breast cancer survivors. Studies suggest that mortality after certain SPCs may be higher than mortality after first primary cancers (FPCs) of the same type. A cohort study was conducted among 63,424 US women using the Surveillance, Epidemiology, and End Results 18 database (2000–2016) to compare mortality after a SPC among breast cancer survivors to mortality among women after a FPC using Cox proportional hazard regression. Propensity scores were used to match survivors with SPCs to women with FPCs 1:1 based on cancer type and prognostic factors. During a median follow-up of 42 months, 11,532 cancer deaths occurred after SPCs among survivors compared to 9305 deaths after FPCs. Cumulative cancer mortality was 44.7% for survivors with SPCs and 35.2% for women with FPCs. Survivors with SPCs had higher risk of cancer death (hazard ratio (HR): 1.27, 95% CI: 1.23–1.30) and death overall (HR: 1.18, 95% CI: 1.15–1.21) than women with FPCs. Increased risk of cancer death after SPCs compared to FPCs was observed for cancer in breast, lung, colon and/or rectum, uterus, lymphoma, melanoma, thyroid, and leukemia. Estrogen receptor status and treatment of the prior breast cancer as well as time between prior breast cancer and SPC significantly modified the mortality difference between women with SPC and FPC. A more tailored approach to early detection and treatment could improve outcomes from second cancer in breast cancer survivors.
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Affiliation(s)
- Zhengyi Deng
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Miranda R Jones
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.,Division of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD, USA
| | - Mei-Cheng Wang
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Kala Visvanathan
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA. .,Division of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD, USA. .,Women's Malignancies Program, Sidney Kimmel Comprehensive Cancer at Johns Hopkins, Baltimore, MD, USA.
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Wu Y, Deng Y, Wei B, Xiang D, Hu J, Zhao P, Lin S, Zheng Y, Yao J, Zhai Z, Wang S, Lou W, Yang S, Zhang D, Lyu J, Dai Z. Global, regional, and national childhood cancer burden, 1990-2019: An analysis based on the Global Burden of Disease Study 2019. J Adv Res 2022; 40:233-247. [PMID: 35700919 PMCID: PMC9481947 DOI: 10.1016/j.jare.2022.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 04/25/2022] [Accepted: 06/03/2022] [Indexed: 12/24/2022] Open
Abstract
We provided a comprehensive and the latest evaluation of the global childhood cancer burden. The childhood cancer burden has been decreasing globally over the last 30 years. Age-standardized incidence and prevalence rates of childhood cancer were more notable in higher SDI quintiles. Age-standardized death and disability-adjusted life year rates of childhood cancer decreased with SDI. Leukemia was still the most common cancer and the leading cause of death among children.
Introduction Cancer is the leading cause of death among children. Objectives We report on the latest estimates of the burden of cancer among children at the global, regional, and national levels from 1990 to 2019. Methods Based on the Global Burden of Disease Study 2019, children’s cancer data were analyzed by sex, age, year, and location. Age-standardized rates were used to compare the burdens among regions and nations. Joinpoint analysis was applied to assess the temporal trend of the global childhood cancer burden. Results In 2019, 291,319 (95% uncertainty interval [UI], 254,239 to 331,993) new cases and 98,834 (86,124 to 113,581) deaths from childhood cancer were documented globally. Further, 8,302,464 (7,230,447 to 9,555,118) DALYs and 1,806,630 (1,567,808 to 2,089,668) prevalent cases were recorded in the same year. Age-standardized incidence and prevalence rates of childhood cancer were greatest in higher SDI settings and increased most significantly in Australasia and Southern Latin America over the last 30 years. However, although age-standardized death and DALY rates of childhood cancer have remarkably decreased in all regions since 1990, countries with a lower SDI showed the highest rates in 2019, particularly in countries in Eastern Sub-Saharan Africa. Among all cancers, leukemia has shown the largest decrease in burden since 1990. Despite this, leukemia was still the most common cancer and the leading cause of death among children in 2019, followed by brain and central nervous system cancer. Conclusions On a global scale, the childhood cancer burden has significantly fallen over the last 30 years, but is still higher in lower SDI countries. Effective interventions and collaborations among nations should be facilitated to improve healthcare among children with cancer in countries with lower SDI.
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Affiliation(s)
- Ying Wu
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China; Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yujiao Deng
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China; Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Bajin Wei
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China; Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Dong Xiang
- Celilo Cancer Center, Oregon Health Science Center affiliated Mid-Columbia medical center, The Dalles, OR, USA
| | - Jingjing Hu
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Peng Zhao
- Department of Medical Oncology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Shuai Lin
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yi Zheng
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China; Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jia Yao
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Zhen Zhai
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China; Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shuqian Wang
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Weiyang Lou
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Si Yang
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China; Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Dai Zhang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jun Lyu
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China.
| | - Zhijun Dai
- Department of Breast Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China; Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
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Newcomer K, Robbins KJ, Perone J, Hinojosa FL, Chen D, Jones S, Kaufman CK, Weiser R, Fields RC, Tyler DS. Malignant melanoma: evolving practice management in an era of increasingly effective systemic therapies. Curr Probl Surg 2022; 59:101030. [PMID: 35033317 PMCID: PMC9798450 DOI: 10.1016/j.cpsurg.2021.101030] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 05/12/2021] [Indexed: 01/03/2023]
Affiliation(s)
- Ken Newcomer
- Department of Surgery, Barnes-Jewish Hospital, Washington University, St. Louis, MO
| | | | - Jennifer Perone
- Department of Surgery, University of Texas Medical Branch, Galveston, TX
| | | | - David Chen
- e. Department of Medicine, Washington University, St. Louis, MO
| | - Susan Jones
- f. Department of Pediatrics, Washington University, St. Louis, MO
| | | | - Roi Weiser
- University of Texas Medical Branch, Galveston, TX
| | - Ryan C Fields
- Department of Surgery, Washington University, St. Louis, MO
| | - Douglas S Tyler
- Department of Surgery, University of Texas Medical Branch, Galveston, TX.
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Romanelli K, Wells J, Patel A, Mendonca Torres M, Costello J, Jensen K, Vasko V. Clinical and molecular characterization of thyroid cancer when seen as a second malignant neoplasm. Ther Adv Endocrinol Metab 2021; 12:20420188211058327. [PMID: 35154635 PMCID: PMC8832328 DOI: 10.1177/20420188211058327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 10/19/2021] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Second malignant neoplasms (SMN) are among the most serious long-term adverse health conditions in cancer survivors. The aim of this study was to characterize clinical findings of patients who developed thyroid cancers as SMN, and to examine genomic alterations in thyroid cancer tissue. METHODS Retrospective analysis of medical records from patients seen for management of thyroid cancer over 10-year period was performed. Clinical and pathologic data were retrieved from their medical charts. Tumor DNA and RNA were extracted from formalin-fixed, paraffin-embedded tissue and subjected to next-generation sequencing (NGS) using Ion Torrent Oncomine Focus Assay. Microfluidic digital polymerase chain reactions (PCRs) were performed using QIAcuity Digital PCR System to identify BRAF V600E mutations and RET/PTC fusions. RESULTS Sixteen of 620 patients operated for thyroid cancer had history of previously diagnosed malignancy. Eight patients were male and eight patients were female, with a median age at diagnosis of 58.5 years (range, 4-78). Four patients had history of pediatric malignancy (PedCa), and 12 patients had a history of prior malignancy as an adult (AdCa). The latency periods for development of SMN in PedCa and AdCa patients were 10.8 (±5.2) years and 9.5 (±5.2) years, respectively. Histopathology revealed papillary thyroid cancers in 15 cases, and follicular thyroid cancer in 1 case. All tumors were classified as T1 or T2, and there were no patients presenting with metastases at the time of surgery. Genomic alterations were detected in 13/16 (81.2%) tumors including eight gene mutations (BRAF V600E (N = 4), RAS (N = 2), PI3CA (N = 2) and five gene fusions (RET/PTC1 (N = 4) and STRN/ALK (N = 1). In patients with PedCa and AdCa, mutations were detected in 1/4 (25%) and 7/12 (58.3%), respectively, p = 0.56; and fusions were detected in 3/4 (75%) and 2/12 (16.6%), respectively, p = 0.06. In patients with and without history of therapeutic irradiation, mutations were detected with the same frequencies (5/10 (50%), and 3/6 (50%), respectively, p = 1.0). Gene fusions were detected in patients with and without history of irradiation in 5/10 (55.5%) and 0/6 (0%), respectively, p = 0.09. CONCLUSIONS Monitoring of cancer survivors for thyroid disorders allowed diagnosis of second thyroid cancers at early stages. Second thyroid cancers harbor genomic alterations that are typical for sporadic as well as for radio-induced thyroid cancers.
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Affiliation(s)
- Kristen Romanelli
- Department of Pediatric, Hematology/Oncology,
Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Justin Wells
- Department of Pathology, Walter Reed National
Military Medical Center, Bethesda, MD, USA
| | - Aneeta Patel
- Department of Pediatrics, Uniformed Services
University of Health Sciences, Bethesda, MD, USA
| | - Maria Mendonca Torres
- Department of Pediatrics, Uniformed Services
University of Health Sciences, Bethesda, MD, USA
| | - John Costello
- Department of Pediatrics, Uniformed Services
University of Health Sciences, Bethesda, MD, USA
| | - Kirk Jensen
- Department of Pediatrics, Uniformed Services
University of Health Sciences, Bethesda, MD, USA
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Feng Q, Nickels E, Muskens IS, de Smith AJ, Gauderman WJ, Yee AC, Ricker C, Mack T, Leavitt AD, Godley LA, Wiemels JL. Increased burden of familial-associated early-onset cancer risk among minority Americans compared to non-Latino Whites. eLife 2021; 10:64793. [PMID: 34155975 PMCID: PMC8219377 DOI: 10.7554/elife.64793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 06/04/2021] [Indexed: 01/11/2023] Open
Abstract
Background The role of race/ethnicity in genetic predisposition of early-onset cancers can be estimated by comparing family-based cancer concordance rates among ethnic groups. Methods We used linked California health registries to evaluate the relative cancer risks for first-degree relatives of patients diagnosed between ages 0 and 26, and the relative risks of developing distinct second primary malignancies (SPMs). From 1989 to 2015, we identified 29,631 cancer patients and 62,863 healthy family members. We calculated the standardized incident ratios (SIRs) of early-onset primary cancers diagnosed in proband siblings and mothers, as well as SPMs detected among early-onset patients. Analyses were stratified by self-identified race/ethnicity. Results Given probands with cancer, there were increased relative risks of any cancer for siblings and mothers (SIR = 3.32; 95% confidence interval [CI]: 2.85-3.85) and of SPMs (SIR = 7.27; 95% CI: 6.56-8.03). Given a proband with solid cancer, both Latinos (SIR = 4.98; 95% CI: 3.82-6.39) and non-Latino Blacks (SIR = 7.35; 95% CI: 3.36-13.95) exhibited significantly higher relative risk of any cancer in siblings and mothers when compared to non-Latino White subjects (SIR = 3.02; 95% CI: 2.12-4.16). For hematologic cancers, higher familial risk was evident for Asian/Pacific Islanders (SIR = 7.56; 95% CI: 3.26-14.90) compared to non-Latino whites (SIR = 2.69; 95% CI: 1.62-4.20). Conclusions The data support a need for increased attention to the genetics of early-onset cancer predisposition and environmental factors in race/ethnic minority families in the United States. Funding This work was supported by the V Foundation for funding this work (Grant FP067172).
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Affiliation(s)
- Qianxi Feng
- Department of Preventive Medicine, USC Keck School of MedicineLos AngelesUnited States
| | - Eric Nickels
- Department of Preventive Medicine, USC Keck School of MedicineLos AngelesUnited States,Children's Hospital Los AngelesLos AngelesUnited States
| | - Ivo S Muskens
- Department of Preventive Medicine, USC Keck School of MedicineLos AngelesUnited States
| | - Adam J de Smith
- Department of Preventive Medicine, USC Keck School of MedicineLos AngelesUnited States
| | - W James Gauderman
- Department of Preventive Medicine, USC Keck School of MedicineLos AngelesUnited States
| | - Amy C Yee
- Department of Preventive Medicine, USC Keck School of MedicineLos AngelesUnited States
| | - Charite Ricker
- Norris Comprehensive Cancer Center, USC Keck School of MedicineLos AngelesUnited States
| | - Thomas Mack
- Department of Preventive Medicine, USC Keck School of MedicineLos AngelesUnited States
| | - Andrew D Leavitt
- Departments of Medicine and Laboratory Medicine, University of California, San FranciscoSan FranciscoUnited States
| | - Lucy A Godley
- Departments of Medicine and Human Genetics, The University of ChicagoChicagoUnited States
| | - Joseph L Wiemels
- Department of Preventive Medicine, USC Keck School of MedicineLos AngelesUnited States
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Williams LA, Moertel CL, Richardson M, Marcotte EL. Incidence of second malignancies in individuals diagnosed with malignant peripheral nerve sheath tumors. J Neurooncol 2020; 147:701-709. [PMID: 32239432 DOI: 10.1007/s11060-020-03478-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 03/25/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND The incidence of malignant peripheral nerve sheath tumors (MPNSTs) is low in the general population, although individuals with Neurofibromatosis Type I (NF1) are particularly susceptible. These tumors generally have a high probability of metastasis. The rate and types of second malignancies (SMNs) after a primary diagnosis of MPNST are not well characterized. We aimed to quantify the rate of SMNs among individuals with a first primary MPNST using population-based data. METHODS We estimated age-standardized incidence rates (SIRs) for SMNs among 1,579 primary MPNST cases between ages 0-85+ using SEER 18 (2000-2015). We estimated incidence rate ratios (IRRs) and 95% confidence intervals (95% CI) for SMNs in MPNST cases compared with general population rates. We conducted sex-stratified and age-restricted analyses (< 30 years at diagnosis). RESULTS Seven percent (108/1579) of MPNST cases developed a SMN (SIR of 4635 cases/million). Compared to the general population, MPNST cases were more likely to develop SMNs (IRR: 29.3; 95% CI 23.8-34.8) and had a much higher rate of second MPNSTs (IRR: 15,992.9; 95% CI 9594.5-22,391.3). Aside from a second MPNST, second cancers were frequently diagnosed in the breast, lung, skin, and soft tissue in females and were myeloid and skin malignancies in males. When restricted to < 30 years of age, second MPNSTs were the most common cancers diagnosed. CONCLUSIONS The rate of SMNs among MPNST cases is tremendously higher than that observed among individuals with other cancers, particularly for second MPNSTs. These findings suggest rates of SMNs may also be higher in NF1 individuals.
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Affiliation(s)
- Lindsay A Williams
- Division of Epidemiology & Clinical Research, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA.,Brain Tumor Program, University of Minnesota, Minneapolis, MN, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Christopher L Moertel
- Brain Tumor Program, University of Minnesota, Minneapolis, MN, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA.,Pediatric Hematology and Oncology, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Michaela Richardson
- Division of Epidemiology & Clinical Research, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Erin L Marcotte
- Division of Epidemiology & Clinical Research, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA. .,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA. .,, 420 Delaware Street SE MMC 715, Minneapolis, MN, 55455, USA.
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