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Wiernik PH, Dutcher JP. Families with non-Hodgkin lymphoma and plasma cell dyscrasias in their pedigrees. J Investig Med 2024; 72:26-31. [PMID: 37864488 DOI: 10.1177/10815589231210516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2023]
Abstract
Although reports of familial clustering of hematologic malignancies have appeared for decades, the cause(s) of this uncommon occurrence is still not completely understood. Most modern investigations, however, support a genetic rather than an environmental exposure as a cause of this observation. Most pedigrees of families with familial hematologic malignancies demonstrate age of onset anticipation, with the disease diagnosed at an earlier age in successive generations. The cause of this phenomenon is clear in some familial neurologic disorders (trinucleotide repeat expansion) but not at all clear in familial hematologic malignancies. In preparation for molecular studies of familial clustering of hematologic malignancies, we have collected pedigrees on 738 families and have previously demonstrated anticipation in those with familial plasma cell myeloma, chronic lymphocytic leukemia, Hodgkin lymphoma or non-Hodgkin lymphoma (NHL). Here we present data on 36 families with both plasma cell myeloma and NHL in their pedigrees and demonstrate strong evidence for anticipation in these families. We encourage all health care personnel to ask patients multiple times about family medical history and carefully take note of family histories from individuals with uncommon illnesses and to refer families with clustering of such illnesses for further investigation.
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Frommer L, König J, Chatzidou S, Chionos G, Längericht J, Kahaly GJ. Recurrence risk of autoimmune thyroid and endocrine diseases. Best Pract Res Clin Endocrinol Metab 2023; 37:101636. [PMID: 35365417 DOI: 10.1016/j.beem.2022.101636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND OBJECTIVE The recurrence risk ratio (λ) expresses the risk ratio of index patients' first-degree relatives developing a disease as compared to the general population and is a quantitative measure of the genetic contribution to the disease. This paper offers the results of a specialized center as well as a review of the pertinent literature. METHODS Data from 3315 consecutive subjects followed at an ORPHAN academic tertiary referral expert center for endocrine autoimmunity as well as 419 unrelated German families were collected. λ was assessed based on 806 well-documented subjects, 299 index patients with autoimmune glandular (AIGD) and non-endocrine diseases and 507 of their first-degree relatives (328 children, 179 siblings). RESULTS As many as 36% of relatives of patients with autoimmune diseases (AID) were affected by various autoimmune conditions. Twenty-five percent and 23% of all relatives had an AIGD or an autoimmune thyroid disease (AITD), respectively. Furthermore, 29% and 25% of relatives of index cases with polyglandular (PGA) and monoglandular (MGA) autoimmunity were affected. The recurrence risk for AITD was increased 16-fold in both children and siblings compared to the general population (λ, 95% CI 16, 11-21 and 16, 12-19, respectively). Furthermore, λ for AITD/AIGD was 21.62 (95% CI 14.17-30.69)/17.57 (11.80-24.36) and 13.48 (8.42-20.52)/10.68 (6.76-16.02) for siblings of patients with PGA and MGA, respectively. Overall, a strong genetic component for AITD and AIGD with a significant genetic impact on the development of PGA was demonstrated. CONCLUSION These novel results strongly recommend the screening for AITD and AIGD in children and siblings of index patients with AITD.
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Affiliation(s)
- Lara Frommer
- Molecular Thyroid Research Laboratory, Department of Medicine I, Johannes Gutenberg University (JGU) Medical Center, 55131 Mainz, Germany
| | - Jochem König
- Institute of Medical Biostatistics, Epidemiology and Informatics, Johannes Gutenberg University (JGU) Medical Center, 55131 Mainz, Germany
| | - Sofia Chatzidou
- Molecular Thyroid Research Laboratory, Department of Medicine I, Johannes Gutenberg University (JGU) Medical Center, 55131 Mainz, Germany
| | - Georgios Chionos
- Molecular Thyroid Research Laboratory, Department of Medicine I, Johannes Gutenberg University (JGU) Medical Center, 55131 Mainz, Germany
| | - Jan Längericht
- Molecular Thyroid Research Laboratory, Department of Medicine I, Johannes Gutenberg University (JGU) Medical Center, 55131 Mainz, Germany
| | - George J Kahaly
- Molecular Thyroid Research Laboratory, Department of Medicine I, Johannes Gutenberg University (JGU) Medical Center, 55131 Mainz, Germany.
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Lin PF, Chen FC, Chen JY, Hu LH, Xie WJ, Liu TY, Guo SB, Lin XM, Liu XW, Ye XH, Li M, Jiang CH. Incidence and familial clustering of infantile hemangiomas: A multicenter study. J Eur Acad Dermatol Venereol 2022; 36:1641-1647. [PMID: 35470460 DOI: 10.1111/jdv.18179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 04/13/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND The exact incidence of infantile hemangiomas (IH) in the Chinese population is still unknown. A positive family history of IH was considered as a risk factor for the development of IH. OBJECTIVES This study aims to investigate the incidence of IH in the Chinese population and the mechanism of family history increases the risk for IH development. METHODS 2489 women and their newborns were enrolled in the prospective study. All newborns were followed up for 12 months to determine whether they developed IH. In addition, 213 IH probands and their 174 siblings were enrolled in the study. The incidence of IH in siblings of the IH probands was investigated. Information regarding risk factors for IH and demographic data were collected on all children. RESULTS Of the 2572 newborns, 58 IH were identified in 56 (2.2%) newborns. The majority of IH were located on the trunk (46.6%). Siblings of the IH probands were at increased risk for the development of IH (P = 0.024, relative risk 2.451), and the occurrence of prenatal risk factors for IH(P = 0.003) compared with the general population. CONCLUSIONS Our study showed that the incidence of IH is 2.2% in the Chinese population. Siblings of the individuals with IH were at increased risk for the development of IH may be related to the family clustering of prenatal risk factors for IH. Further exploration of the mechanisms and common features of these prenatal risk factors may help to disclosure the origin and pathogenesis of IH.
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Affiliation(s)
- Peng-Fei Lin
- Department of Plastic Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001, China.,Department of Plastic Surgery, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, 362000, China
| | - Fa-Chun Chen
- Department of Plastic Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Jia-Yao Chen
- Department of Plastic Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001, China.,Department of Plastic Surgery, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 51000, China
| | - Li-Han Hu
- Department of Plastic Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Wen-Jun Xie
- Department of Plastic Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Ting-Yuan Liu
- Department of Plastic Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001, China
| | - Sheng-Bin Guo
- Department of Obstetrics, Fujian, Maternal and Child Health Hospital, Fuzhou, 350001, China
| | - Xue-Mei Lin
- Department of Obstetrics, Fuzhou Fuxing Maternity Hospital, Fuzhou, 350001, China
| | - Xiu-Wu Liu
- Department of Obstetrics, Fujian, Maternal and Child Health Hospital, Fuzhou, 350001, China
| | - Xian-Hua Ye
- Department of Clinical Laboratory, Fuzhou Fuxing Maternity Hospital, Fuzhou, 350001, China
| | - Ming Li
- Department of Plastic Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001, China.,Department of Plastic Surgery and Regenerative Medicine Institute, Fujian Medical University, Fuzhou, 350001, China.,Tissue and Organ Regeneration Engineering Center of Fujian Higher Education, Fuzhou, 350001, China
| | - Cheng-Hong Jiang
- Department of Plastic Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001, China.,Department of Plastic Surgery and Regenerative Medicine Institute, Fujian Medical University, Fuzhou, 350001, China.,Tissue and Organ Regeneration Engineering Center of Fujian Higher Education, Fuzhou, 350001, China
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Zheng G, Sundquist J, Sundquist K, Ji J. Prostate cancer incidence and survival in relation to prostate cancer as second cancer in relatives. Cancer Med 2022; 11:2117-2124. [PMID: 35312170 PMCID: PMC9119351 DOI: 10.1002/cam4.4591] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 01/01/2022] [Accepted: 01/03/2022] [Indexed: 12/23/2022] Open
Abstract
Objectives To investigate if the risk of prostate cancer (PC) differs based on the order of primary PC diagnosed in first‐degree relatives (FDRs) given possibly different risk factors for PC as first primary cancer (PCa‐1) and second primary cancer (PCa‐2). Subjects and Methods In this Swedish nationwide cohort, PC diagnosis was followed for among 149,985 men with one FDR affected by PCa‐1, 10,972 with one FDR affected by PCa‐2 and 2,896,561 without any FDRs affected by cancer in a maximum of 57 years. PC patients were further followed for death due to PC since diagnosis. Relative risk (RR) of PC was estimated with Poisson regression and hazard ratio (HR) with Cox proportional hazard model. Results Compared to men without any FDRs affected by cancer, the RRs of PC in men with one FDR affected by PCa‐1 and PCa‐2 were 2.12 (95% confidence interval [CI]: 2.07–2.17) and 1.69 (1.54–1.85), respectively. The risk in men with one FDR affected by PCa‐2 was significantly lower than those with one FDR affected by PCa‐1 after additionally adjusting for family relationship (father‐son and brothers) and age at diagnosis of PC in FDR (RR PCa‐2 vs PCa‐1, 0.85, 95% CI, 0.78–0.94). PC patients with a family history of PCa‐2 were more likely to be detected at late‐stage and less likely to be diagnosed by screening, compared to those with a family history of PCa‐1. Patients whose PC was diagnosed after the diagnosis of PCa‐1 in FDRs had a better survival than those without a family history of cancer (HR, 0.88, 95% CI, 0.80–0.97), but no such association was observed among patients with a family history of PCa‐2. Conclusion Our study indicates a discrepancy between PC risks associated with a family history of PCa‐1 and PC‐2 and the reason behind it may be multifactorial.
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Affiliation(s)
- Guoqiao Zheng
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
| | - Jan Sundquist
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden.,Department of Family Medicine and Community Health, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, USA.,Center for Community-Based Healthcare Research and Education (CoHRE), Department of Functional Pathology, School of Medicine, Shimane University, Matsue, Japan
| | - Kristina Sundquist
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden.,Department of Family Medicine and Community Health, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, USA.,Center for Community-Based Healthcare Research and Education (CoHRE), Department of Functional Pathology, School of Medicine, Shimane University, Matsue, Japan
| | - Jianguang Ji
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
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Kempker JA, Martin GS, Rondina MT, Cannon-Albright LA. Evidence for an Inherited Contribution to Sepsis Susceptibility Among a Cohort of U.S. Veterans. Crit Care Explor 2022; 4:e0603. [PMID: 35036923 DOI: 10.1097/CCE.0000000000000603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Analyze a unique clinical and genealogical resource for evidence of familial clustering of sepsis to test for an inherited contribution to sepsis predisposition.
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Corcia P, Lunetta C, Couratier P, Vourc'h P, Gromicho M, Desnuelle C, Soriani MH, Pinto S, de Carvalho M. Familial clustering of primary lateral sclerosis and amyotrophic lateral sclerosis: Supplementary evidence for a continuum. Eur J Neurol 2021; 28:2780-2783. [PMID: 34110677 DOI: 10.1111/ene.14960] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/22/2021] [Accepted: 05/27/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND PURPOSE Primary lateral sclerosis (PLS) is a motor neuron disorder characterized by a pure upper motor neuron degeneration in the bulbar and spinal regions. The key difference with amyotrophic lateral sclerosis (ALS) is the lower motor neuron system integrity. Despite important literature on this disease, the pathophysiology of PLS remains unknown, and the link with ALS still balances between a continuum and a separate entity from ALS. METHODS We report nine families in which both PLS and ALS cases occurred, in general among first-degree relatives. RESULTS The patients with PLS and ALS had a typical disease presentation. Genetic studies revealed mutations in SQSMT1, TBK1, and TREM2 genes in two PLS patients and one ALS patient. CONCLUSIONS These results strongly support a phenotypic continuum between PLS and ALS.
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Affiliation(s)
- Philippe Corcia
- ALS Center, CHU Bretonneau Tours, Tours, France.,UMR 1253 iBrain, Université de Tours, Inserm, Tours, France
| | - Christian Lunetta
- NEMO Clinical Center, Serena Onlus Foundation, Milan, Italy.,NEMO Lab, Milan, Italy
| | | | - Patrick Vourc'h
- UMR 1253 iBrain, Université de Tours, Inserm, Tours, France.,Department of Biochemistry, Molecular Biology, CHU Tours, Tours, France
| | - Marta Gromicho
- Faculty of Medicine, Instituto de Fisiologia, Instituto de Medicina Molecular, Universidade de Lisboa, Lisbon, Portugal
| | | | | | - Susana Pinto
- Faculty of Medicine, Instituto de Fisiologia, Instituto de Medicina Molecular, Universidade de Lisboa, Lisbon, Portugal
| | - Mamede de Carvalho
- Faculty of Medicine, Instituto de Fisiologia, Instituto de Medicina Molecular, Universidade de Lisboa, Lisbon, Portugal.,Department of Neurosciences and Mental Health, Hospital de Santa Maria-Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal
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Mukama T, Kharazmi E, Sundquist K, Sundquist J, Fallah M. Risk-adapted starting age of breast cancer screening in women with a family history of ovarian or other cancers: A nationwide cohort study. Cancer 2021; 127:2091-2098. [PMID: 33620751 DOI: 10.1002/cncr.33456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/02/2020] [Accepted: 12/24/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND There is a lack of evidence-based recommendations for the age at which women with a family history of cancers other than breast cancer should start breast cancer screening. METHODS Using Swedish family cancer data sets, the authors conducted a nationwide cohort study including 5,099,172 Swedish women born after 1931 (follow-up, 1958-2015). Accounting for calendar time, they calculated the relative risk of breast cancer for women with a family history of a discordant cancer in 1 first-degree relative. Furthermore, the authors used 10-year cumulative risk to determine the ages at which women with a family history of discordant cancer reached risk thresholds at which women in the general population were recommended to start breast cancer screening. RESULTS A family history of cancer at 15 sites was associated with an increased risk of breast cancer. Among women younger than 50 years, the highest risk of breast cancer was observed for those with a family history of ovarian cancer (standardized incidence ratio, 1.44; 95% confidence interval, 1.26-1.64). In these women, the risk of breast cancer associated with a family history at other cancer sites ranged from 1.08-fold for prostate cancer to 1.18-fold for liver cancer. When breast cancer screening was recommended to be started at the age of 50 years for the general population, women with 1 first-degree relative with ovarian cancer attained the threshold risk for screening at the age of 46 years. Women with a family history of other discordant cancers did not reach the risk thresholds for screening at younger ages. CONCLUSIONS Many cancers showed familial associations with breast cancer, but women with a family history of these cancers (except for ovarian cancer) did not reach risk thresholds for screening at younger ages.
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Affiliation(s)
- Trasias Mukama
- Risk Adapted Prevention Group, Division of Preventive Oncology, National Center for Tumor Diseases, German Cancer Research Center, Heidelberg, Germany.,Department of Disease Control and Environmental Health, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Elham Kharazmi
- Risk Adapted Prevention Group, Division of Preventive Oncology, National Center for Tumor Diseases, German Cancer Research Center, Heidelberg, Germany.,Center for Primary Health Care Research, Lund University, Malmo, Sweden.,Statistical Genetics Group, Institute of Medical Biometry and Informatics, Heidelberg University, Heidelberg, Germany
| | - Kristina Sundquist
- Center for Primary Health Care Research, Lund University, Malmo, Sweden.,Department of Family Medicine and Community Health, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York.,Center for Community-Based Healthcare Research and Education, Department of Functional Pathology, School of Medicine, Shimane University, Shimane, Japan
| | - Jan Sundquist
- Center for Primary Health Care Research, Lund University, Malmo, Sweden.,Department of Family Medicine and Community Health, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York.,Center for Community-Based Healthcare Research and Education, Department of Functional Pathology, School of Medicine, Shimane University, Shimane, Japan
| | - Mahdi Fallah
- Risk Adapted Prevention Group, Division of Preventive Oncology, National Center for Tumor Diseases, German Cancer Research Center, Heidelberg, Germany.,Center for Primary Health Care Research, Lund University, Malmo, Sweden
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Jamil Z, Waheed Y, Ahsan O, Najmi MH, Yousuf H. Familial clustering of hepatitis C virus in a Pakistani population. J Med Virol 2020; 92:3499-3506. [PMID: 32320089 DOI: 10.1002/jmv.25926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/18/2020] [Indexed: 02/05/2023]
Abstract
Pakistan has the second-highest burden of hepatitis C patients in the world. A total of 683 individuals, who visited the Liver Clinic during the study period, were screened for the presence of hepatitis C virus (HCV) infection. A total of 534 individuals who showed positive HCV infection were grouped into the case group and 149 individuals with HCV negative status were grouped into the control group. A detailed questionnaire was used to collect demographic, clinical, HCV risk factor, and familial clustering data. HCV familial clustering was found in 30.1% in the case group compared with 17.4% in the control group. We also found 17% of patients had spouses who were also infected with HCV compared to 4% spouse infection in the control group. Only 3.7% of patients had HCV positive mothers. These results were further expanded by regression analysis that showed that family history and sexual history are independent risk factors for transmission of hepatitis C infection and mother's history has no significance as a risk factor for transmission. The major risk factor for getting HCV infection are dental procedures, unsafe injections, surgery, and blood transfusions. There is a strong need to increase awareness about HCV transmission routes among positive patients to reduce the chances of HCV familial clustering.
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Affiliation(s)
- Zubia Jamil
- Department of Medicine, Foundation University Medical College, Foundation University Islamabad, Islamabad, Pakistan
| | - Yasir Waheed
- Multidisciplinary Lab, Foundation University Medical College, Foundation University Islamabad, Islamabad, Pakistan
| | - Omar Ahsan
- Department of Medicine, Foundation University Medical College, Foundation University Islamabad, Islamabad, Pakistan
| | - Muzammil H Najmi
- Department of Pharmacology and Therapeutics, Foundation University Medical College, Foundation University Islamabad, Islamabad, Pakistan
| | - Hamid Yousuf
- Department of Medicine, Besti Cadwaladar University Health Board, North Wales, UK
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Tatu AL, Nadasdy T, Bujoreanu FC. Familial clustering of COVID-19 skin manifestations. Dermatol Ther 2020; 33:e14181. [PMID: 32794366 PMCID: PMC7435557 DOI: 10.1111/dth.14181] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/01/2020] [Accepted: 08/08/2020] [Indexed: 12/29/2022]
Abstract
The medical community in the past months has seen a flourishing of information related to the SARS‐CoV‐2 virus responsible for the COVID‐19 pandemic. From the early days of the pandemic, the SARS‐CoV‐2 virus has been linked to multiple different types of skin involvement. To the best of our knowledge, we are the first to report on a case of familial clustering of a maculopapular COVID‐19 rash. Eight persons presented COVID‐19 symptoms, six were confirmed via SAR‐CoV‐2 chemoluminescent immunoassays, and the four related by blood presented skin manifestations. Although, it has not been fully established if the SARS‐CoV‐2 can in fact cause viral exanthems, our observations regarding the familial clustering and the temporal evolution seen in this family seem to present strong evidence of a viral exanthema related to SARS‐CoV‐2 infection.
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Affiliation(s)
- Alin Laurentiu Tatu
- Department of Dermatology, "St. Parascheva" Clinical Hospital of Infectious Diseases, Galati, Romania.,Faculty of Medicine and Pharmacy/Clinical Department, Dermatology, Medical, and Pharmaceutical Research Unit/Competitive, Interdisciplinary Research Integrated Platform, ReForm-UDJG "Dunărea de Jos" University, Galati, Romania
| | - Thomas Nadasdy
- Department of Dermatology, "St. Parascheva" Clinical Hospital of Infectious Diseases, Galati, Romania
| | - Florin Ciprian Bujoreanu
- Department of Dermatology, "St. Parascheva" Clinical Hospital of Infectious Diseases, Galati, Romania.,Department of Dermatology, "Dunărea de Jos" University of Galati, Doctoral School-Medicine, Galati, Romania
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10
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Zhang L, Huang S. Clinical Features of 33 Cases in Children Infected With SARS-CoV-2 in Anhui Province, China-A Multi-Center Retrospective Cohort Study. Front Public Health 2020; 8:255. [PMID: 32612971 PMCID: PMC7308592 DOI: 10.3389/fpubh.2020.00255] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 05/21/2020] [Indexed: 12/16/2022] Open
Abstract
Background: As of 23rd February 2020, China had 77,048 patients with confirmed SARS-CoV-2 infections, and only 2. 1% of patients were under the age of 19 years. Morbidity among children was much lower, with milder or absent signs and symptoms; chest CT scans showed milder symptoms, if at all, compared to adults. Objective: Report the epidemiological, clinical features, laboratory, radiological characteristics, and treatment of SARS-CoV-2 infections. Compare additional signs and symptoms, investigate familial clustering, compare laboratory results, and find out relevance between age and typical chest CT scans in patients. Methods: We studied 33 young patients with laboratory-confirmed SARS-CoV-2 infection in Anhui Province of China by 16th February 2020. Their signs, symptoms, and familial clustering were analyzed. We compared the laboratory test results, age, and gender among three parts based on their chest CT scans. Results: Familial clustering was seen in 30 (30/33; 90.91%) patients; three families had seven confirmed members infected with the disease. Eight (8/33; 24.24%) patients had no symptoms, 12 (12/33; 36.36%) patients had only fever, nine (9/33; 27.27%) patients had fever and additional symptoms, and 12 (12/33; 36.36%) patients had no fever. Dry cough was the most common additional symptom. In 25 (25/33; 75.76%) patients, the percent of lymphocytes decreased; 26 (26/33; 78.79%) patients were older than 7 years. More male than female patients and patients older than 8 years showed typical abnormalities in the chest CT scans (P = 0.038). Only two 18 years old patients had hepatic injury. Conclusion: Children's infection is mild and familial clustering was the most common channel. The older patients had more typical ground glass opacity (GGO) or consolidation in chest CT scans. Cases without fever strongly suggested that non-symptomatic children should not be assumed to be free of infection when their family members have confirmed infection. Most children showed clinical features distinguishable from adults and with increased susceptibility within family members.
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Affiliation(s)
- Lan Zhang
- Pediatric Department Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Songming Huang
- Pediatric Department Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, China
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11
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Muchira JM, Gona PN, Mogos MF, Stuart‐Shor E, Leveille SG, Piano MR, Hayman LL. Temporal Trends and Familial Clustering of Ideal Cardiovascular Health in Parents and Offspring Over the Life Course: An Investigation Using The Framingham Heart Study. J Am Heart Assoc 2020; 9:e016292. [PMID: 32486880 PMCID: PMC7429037 DOI: 10.1161/jaha.120.016292] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Evidence suggests familial aggregation and intergenerational associations for individual cardiovascular health (CVH) metrics. Over a 53‐year life course, we examined trends and association of CVH between parents and their offspring at similar mean ages. Methods and Results We conducted a series of cross‐sectional analyses of the FHS (Framingham Heart Study). Parent‐offspring pairs were assessed at exams where their mean age distributions were similar. Ideal CVH was defined using 5 CVH metrics: blood pressure (<120/<80 mm Hg), fasting blood glucose (<100 mg/dL), blood cholesterol (<200 mg/dL), body mass index (<25 kg/m2), and non‐smoking. Joinpoint regression and Chi‐squared test were used to assess linear trend; proportional‐odds regression was used to examine the association between parents and offspring CVH. A total of 2637 parents were paired with 3119 biological offspring throughout 6 exam cycles. Similar patterns of declining ideal CVH with advancing age were observed in parents and offspring. Small proportions of parents (4%) and offspring (17%) achieved 5 CVH metrics at ideal levels (P‐trend <0.001). Offspring of parents with poor CVH had more than twice the odds of having poor CVH (pooled odds ratio, 2.59; 95% CI, 1.98–3.40). Over time, elevated glucose levels and obesity doubled among the offspring and were the main drivers for declining ideal CVH trends. Conclusions Parental CVH was positively associated with offspring CVH. However, intergenerational CVH gains from declining smoking rates, cholesterol, and blood pressure were offset by rising offspring obesity and elevated glucose levels. This suggests an intergenerational phenotypic shift of risk factors and the need for a family‐centered approach to cardiovascular care.
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Affiliation(s)
- James M. Muchira
- Center for Research Development and ScholarshipVanderbilt University, School of NursingNashvilleTN
- College of Nursing and Health SciencesUniversity of Massachusetts BostonBostonMA
| | - Philimon N. Gona
- College of Nursing and Health SciencesUniversity of Massachusetts BostonBostonMA
| | - Mulubrhan F. Mogos
- Center for Research Development and ScholarshipVanderbilt University, School of NursingNashvilleTN
| | - Eileen Stuart‐Shor
- College of Nursing and Health SciencesUniversity of Massachusetts BostonBostonMA
- Beth Israel Deaconess Medical CenterBostonMA
| | - Suzanne G. Leveille
- College of Nursing and Health SciencesUniversity of Massachusetts BostonBostonMA
- Beth Israel Deaconess Medical CenterBostonMA
- Harvard Medical SchoolBostonMA
| | - Mariann R. Piano
- Center for Research Development and ScholarshipVanderbilt University, School of NursingNashvilleTN
| | - Laura L. Hayman
- College of Nursing and Health SciencesUniversity of Massachusetts BostonBostonMA
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12
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Abstract
Autoimmune polyglandular diseases (APD) are defined as the presence of two autoimmune -induced endocrine failures. With respect to the significant morbidity and potential mortality of APD, the diagnostic objective is to detect APD at an early stage, with the advantage of less frequent complications, effective therapy and better prognosis. This requires that patients at risk be regularly screened for subclinical endocrinopathies prior to clinical manifestation. Regarding the time interval between manifestation of first and further endocrinopathies, regular and long-term follow-up is warranted. Quality of life and psychosocial status are poor in APD patients and involved relatives. Familial clustering is high in patients with APD. Considering the high incidence of one or more endocrinopathies in first-degree relatives of patients with APD, family members should be regularly screened since they may also develop autoimmune endocrinopathies. Multidisciplinary management of these multiplex families in specialized centers is warranted.
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Affiliation(s)
- George J Kahaly
- Department of Medicine I, Johannes Gutenberg University Medical Center, Mainz, Germany.
| | - Lara Frommer
- Department of Medicine I, Johannes Gutenberg University Medical Center, Mainz, Germany.
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De Barbieri Z, Fernández MA, Newbury DF, Villanueva P. Family aggregation of language impairment in an isolated Chilean population from Robinson Crusoe Island. Int J Lang Commun Disord 2018; 53:643-655. [PMID: 29575355 DOI: 10.1111/1460-6984.12377] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 01/18/2018] [Accepted: 01/20/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND It has been reported that the inhabitants of the Chilean Robinson Crusoe Island have an increased frequency of specific language impairment (SLI) or developmental language disorder (DLD). AIMS To explore the familial aggregation of DLD in this community. METHODS & PROCEDURES We assessed the frequency of DLD amongst colonial children between the ages of 3 and 8;11 years (50 individuals from 45 nuclear families). Familial aggregation rates of language disorder were calculated by assessing all available first-degree relatives (n = 107, 77 parents, 25 siblings, five half-siblings) of the probands. OUTCOMES & RESULTS We found that 71% of the child population performed significantly below expected in measures of phonological production or expressive and receptive morphology. The majority of these children presented with severe expressive and/or receptive language difficulties. One-quarter of language-disordered probands primarily had phonological difficulties. Family members of affected probands experienced a higher risk of language disorder than those of typically developing probands. This increased risk was apparent regardless of non-verbal IQ. CONCLUSIONS & IMPLICATIONS The study substantiates the existence of a familial form of speech and language disorder on Robinson Crusoe Island. Furthermore, we find that the familiarity is stable regardless of non-verbal IQ, supporting the recent movement to reduce the importance of non-verbal IQ criterion in DLD diagnoses.
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Affiliation(s)
- Zulema De Barbieri
- Department of Speech language and Hearing Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - María Angélica Fernández
- Department of Speech language and Hearing Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Dianne F Newbury
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, UK
| | - Pía Villanueva
- Department of Speech language and Hearing Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Institute of Biomedical Sciences, Human Genetics Division, Faculty of Medicine, Universidad de Chile, Santiago, Chile
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Cohn‐Hokke PE, Holstege H, Weiss MM, van der Flier WM, Barkhof F, Sistermans EA, Pijnenburg YAL, van Swieten JC, Meijers‐Heijboer H, Scheltens P. A novel CCM2 variant in a family with non-progressive cognitive complaints and cerebral microbleeds. Am J Med Genet B Neuropsychiatr Genet 2017; 174:220-226. [PMID: 27277535 PMCID: PMC5363380 DOI: 10.1002/ajmg.b.32468] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 05/25/2016] [Indexed: 01/09/2023]
Abstract
Lobar cerebral microbleeds are most often sporadic and associated with Alzheimer's disease. The aim of our study was to identify the underlying genetic defect in a family with cognitive complaints and multiple lobar microbleeds and a positive family history for early onset Alzheimer's disease. We performed exome sequencing followed by Sanger sequencing for validation purposes on genomic DNA of three siblings with cognitive complaints, reduced amyloid-beta-42 in CSF and multiple cerebral lobar microbleeds. We checked for the occurrence of the variant in a cohort of 363 patients with early onset dementia and/or microbleeds. A novel frameshift variant (c.236_237delAC) generating a premature stop codon in the CCM2 gene shared by all three siblings was identified. Pathogenicity of the variant was supported by the presence of cerebral cavernous malformations in two of the siblings and by the absence of the variant exome variant databases. Two siblings were homozygous for APOE-ϵ4; one heterozygous. The cognitive complaints, reduced amyloid-beta-42 in CSF and microbleeds suggest preclinical Alzheimer's disease, but the stability of the cognitive complaints does not. We hypothesize that the phenotype in this family may be due to a combination of the CCM2 variant and the APOE status. © 2016 The Authors. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics Published by Wiley Periodicals, Inc.
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Affiliation(s)
- Petra E. Cohn‐Hokke
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands
| | - Henne Holstege
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands,Alzheimer Center, Department of Neurology, VU University Medical CenterNeuroscience Campus AmsterdamAmsterdamThe Netherlands
| | - Marjan M. Weiss
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands
| | - Wiesje M. van der Flier
- Alzheimer Center, Department of Neurology, VU University Medical CenterNeuroscience Campus AmsterdamAmsterdamThe Netherlands,Department of Epidemiology and BiostatisticsVU University Medical CenterAmsterdamThe Netherlands
| | - Frederik Barkhof
- Department of Radiology & Nuclear Medicine, VU University Medical CenterNeuroscience Campus AmsterdamAmsterdamThe Netherlands
| | - Erik A. Sistermans
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands
| | - Yolande A. L. Pijnenburg
- Alzheimer Center, Department of Neurology, VU University Medical CenterNeuroscience Campus AmsterdamAmsterdamThe Netherlands
| | - John C. van Swieten
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands,Alzheimer Center, Department of Neurology, VU University Medical CenterNeuroscience Campus AmsterdamAmsterdamThe Netherlands,Department of NeurologyErasmus Medical CenterRotterdamThe Netherlands
| | | | - Philip Scheltens
- Alzheimer Center, Department of Neurology, VU University Medical CenterNeuroscience Campus AmsterdamAmsterdamThe Netherlands
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Kupferman J, Amador JJ, Lynch KE, Laws RL, López-Pilarte D, Ramírez-Rubio O, Kaufman JS, Lau JL, Weiner DE, Robles NV, Verma KP, Scammell MK, McClean MD, Brooks DR, Friedman DJ. Characterization of Mesoamerican Nephropathy in a Kidney Failure Hotspot in Nicaragua. Am J Kidney Dis 2016; 68:716-725. [PMID: 27575010 DOI: 10.1053/j.ajkd.2016.06.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 06/07/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Mesoamerican nephropathy (MeN) is a kidney disease of unknown cause that mainly affects working-age men in Central America. Despite being a major cause of morbidity and mortality in this region, its clinical characteristics have not been well defined. STUDY DESIGN Cross-sectional family-based study. SETTING & PARTICIPANTS 266 members of 24 families with high chronic kidney disease (CKD) burdens in a MeN hotspot in Northwestern Nicaragua. We compared clinical and biochemical characteristics of affected individuals first with their unaffected relatives and then with NHANES (National Health and Nutrition Examination Survey) participants with CKD in order to reveal identifying features of MeN. PREDICTOR CKD defined as serum creatinine level ≥ 1.5mg/dL in men and ≥1.4mg/dL in women. OUTCOMES Clinical and biochemical parameters, including serum sodium, potassium, bicarbonate, calcium, magnesium, phosphorus, and uric acid. RESULTS Hyperuricemia, in many cases severe, was common among patients with MeN. Uric acid levels in patients with MeN were higher than those in NHANES participants (mean, 9.6 vs 7.4mg/dL for men in each group) despite more frequent use of uric acid-lowering medications in Nicaraguan individuals (71.7% vs 11.2%). In multivariable linear mixed-effects regression analysis, uric acid levels were 2.0mg/dL (95% CI, 1.0-3.0; P<0.001) higher in patients with MeN compared with their NHANES counterparts after adjusting for age, estimated glomerular filtration rate, and uric acid-lowering therapies. In contrast to prior reports, hyponatremia and hypokalemia were not common. LIMITATIONS CKD defined by single serum creatinine measurement; population likely not representative of full MeN phenotype spectrum across Central America; major differences between MeN and NHANES groups in important characteristics such as age, ancestry, and recruitment method. CONCLUSIONS Hyperuricemia out of proportion to the degree of decreased kidney function was common among Nicaraguan patients with MeN. Our results suggest that rather than being solely a consequence of CKD, hyperuricemia may play a role in MeN pathogenesis, a hypothesis that deserves further study.
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Affiliation(s)
- Joseph Kupferman
- Division of Nephrology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Juan José Amador
- Department of Epidemiology, Boston University School of Public Health, Boston, MA
| | - Katherine E Lynch
- Division of Nephrology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Rebecca L Laws
- Department of Environmental Health, Boston University School of Public Health, Boston, MA
| | | | - Oriana Ramírez-Rubio
- Department of Epidemiology, Boston University School of Public Health, Boston, MA
| | - James S Kaufman
- Research Service, VA New York Harbor Healthcare System and Department of Medicine, New York University School of Medicine, New York, NY
| | - Jorge Luis Lau
- Universidad Nacional Autónoma de Nicaragua, León, Nicaragua
| | - Daniel E Weiner
- Division of Nephrology, Department of Medicine, Tufts Medical Center, Tufts University School of Medicine, Boston, MA
| | - Ninoska Violeta Robles
- Centro Nacional de Diagnóstico y Referencia, Nicaraguan Ministry of Health, Managua, Nicaragua
| | - Karina P Verma
- Division of Nephrology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Madeleine K Scammell
- Department of Environmental Health, Boston University School of Public Health, Boston, MA
| | - Michael D McClean
- Department of Environmental Health, Boston University School of Public Health, Boston, MA
| | - Daniel R Brooks
- Department of Epidemiology, Boston University School of Public Health, Boston, MA.
| | - David J Friedman
- Division of Nephrology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
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16
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Pelt CE, Erickson JA, Peters CL, Anderson MB, Cannon-Albright L. A Heritable Predisposition to Osteoarthritis of the Hip. J Arthroplasty 2015; 30:125-9. [PMID: 26100471 DOI: 10.1016/j.arth.2015.01.062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 01/15/2015] [Accepted: 01/20/2015] [Indexed: 02/01/2023] Open
Abstract
Using THA as a proxy for underlying osteoarthritis, we describe population-based familial clustering of osteoarthritis of the hip. The GIF test for excess relatedness on 1049 patients that underwent THA (and do not have a diagnostic code for other conditions leading to THA) showed excess relatedness (P<0.001). Even when close relationships were ignored (closer than third-degree relationships), excess relatedness was observed (P=0.020). Relative risk was elevated in first-degree (RR 2.59; 95% CI 1.84-3.53, P=2.0e(-7)), second-degree (RR 1.66; 95% CI 1.11-2.39; P=0.0075) and third-degree relatives (RR 1.46; 95% CI 1.17-1.81; P=5.7e(-4)). Excess relatedness of individuals who had undergone THA for osteoarthritis and elevated risks to both near and distant relatives were observed.
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Affiliation(s)
- Christopher E Pelt
- Department of Orthopaedics, University of Utah School of Medicine, Salt Lake City, Utah
| | - Jill A Erickson
- Department of Orthopaedics, University of Utah School of Medicine, Salt Lake City, Utah
| | - Christopher L Peters
- Department of Orthopaedics, University of Utah School of Medicine, Salt Lake City, Utah
| | - Mike B Anderson
- Department of Orthopaedics, University of Utah School of Medicine, Salt Lake City, Utah
| | - Lisa Cannon-Albright
- Division of Genetic Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah; George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah
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Li Z, Luo B, Du L, Hu H, Xie Y. Familial clustering of overweight and obesity among schoolchildren in northern China. Int J Clin Exp Med 2014; 7:5778-5783. [PMID: 25664106 PMCID: PMC4307553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 10/23/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND We aimed to study the prevalence of overweight and obesity and to assess its familial clustering among schoolchildren in northern China. METHODS A cross-sectional study was conducted on 95,292 schoolchildren in northern China to investigate the prevalence of overweight and obesity. A group of overweight and obese children (n = 450) was selected using a cluster sampling method. Answers from a questionnaire on their and their families' nutrition and behaviors were recorded and analyzed statistically. RESULTS The prevalence of overweight and obesity in schoolchildren was 27.4% and 13.2%, respectively. The prevalence of overweight and obesity were significantly higher in boys than in girls. The prevalence of familial clustering of overweight and obesity was 75.3% and 20.3%, respectively. The prevalence of overweight in first-generation (parents) and second-generation (grandparents) relatives was 54.6% and 53.1%, respectively. There was a linear trend toward correlation between age and the rates of overweight and obesity. The familial clustering of obesity with family income reached statistical significance. CONCLUSION The prevalence of overweight and obesity was extremely high, especially among boys and their fathers. Evidence of familial clustering of overweight and obesity among schoolchildren and their parental family members in northern China is emerging.
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Affiliation(s)
- Zengning Li
- Department of Nutrition, The First Hospital of Hebei Medical University Shijiazhuang, People's Republic of China
| | - Bin Luo
- Department of Nutrition, The First Hospital of Hebei Medical University Shijiazhuang, People's Republic of China
| | - Limei Du
- Department of Nutrition, The First Hospital of Hebei Medical University Shijiazhuang, People's Republic of China
| | - Huanyu Hu
- Department of Nutrition, The First Hospital of Hebei Medical University Shijiazhuang, People's Republic of China
| | - Ying Xie
- Department of Nutrition, The First Hospital of Hebei Medical University Shijiazhuang, People's Republic of China
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Awan H, Jønsson V, Johannesen TB, Ly B, Tjønnfjord GE. Anticipation in families with chronic lymphocytic leukemia and other lymphoproliferative disorders. Transl Oncogenomics 2010; 4:1-9. [PMID: 21566766 PMCID: PMC3072649 DOI: 10.4137/tog.s4529] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Fifty-one parent-offspring pairs with chronic lymphocytic leukemia (CLL) or other lymphoproliferative disorders (nonCLL) such as malignant lymphoma, multiple myeloma, or other types of lymphocytic leukemia than CLL were ascertained independently in 38 families. There were 30 CLL-CLL parent-offspring pairs and 21 pairs with nonCLL in parents and/or in offspring. The median age of onset of disease was 13 years lower in the offspring than in the parents when comparing all 51 pairs (P < 0.001). This difference was mainly caused by a significantly lower age at onset in offspring with parental nonCLL (P < 0.001) where paternal disease was transferred especially to sons, while affected offspring to parents with CLL have the same age at debut of disease than their parents (P = 0.130) and a nearly equal transfer to sons and daughters. The low-malignant follicular small B-cell lymphoma was the predominant diagnosis within nonCLL. Anticipation is pointed out as one likely mechanism behind the lower age at onset of disease in offspring than in parents, even if a part of this difference is ascribed to a generally earlier diagnosis with modern technology in offspring than in parents.
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Affiliation(s)
- Haneef Awan
- Section of Data Processing, Department of Administration, Faculty Division Oslo University Hospital Ullevål, Norway
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Hulsebos TJ, Oskam NT, Bijleveld EH, Westerveld A, Hermsen MA, van den Ouweland AM, Hamel BC, Tijssen CC. Evidence for an ependymoma tumour suppressor gene in chromosome region 22pter-22q11.2. Br J Cancer 1999; 81:1150-4. [PMID: 10584875 PMCID: PMC2374323 DOI: 10.1038/sj.bjc.6690822] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Ependymomas are glial tumours of the brain and spinal cord. The most frequent genetic change in sporadic ependymoma is monosomy 22, suggesting the presence of an ependymoma tumour suppressor gene on that chromosome. Clustering of ependymomas has been reported to occur in some families. From an earlier study in a family in which four cousins developed an ependymoma, we concluded that an ependymoma-susceptibility gene, which is not the NF2 gene in 22q12, might be located on chromosome 22. To localize that gene, we performed a segregation analysis with chromosome 22 markers in this family. This analysis revealed that the susceptibility gene may be located proximal to marker D22S941 in 22pter-22q11.2. Comparative genomic hybridization showed that monosomy 22 was the sole detectable genetic aberration in the tumour of one of the patients. Loss of heterozygosity studies in that tumour revealed that, in accordance to Knudson's two-hit theory of tumorigenesis, the lost chromosome 22 originated from the parent presumed to have contributed the wild-type allele of the susceptibility gene. Thus, our segregation and tumour studies collectively indicate that an ependymoma tumour suppressor gene may be present in region 22pter-22q11.2.
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Affiliation(s)
- T J Hulsebos
- Department of Human Genetics, University of Amsterdam, The Netherlands
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