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Affected Parent (affected + parent)

Distribution by Scientific Domains

Medical Sciences	60%

Selected Abstracts

Risk of developing schizophrenia among Japanese high-risk offspring of affected parent: outcome of a twenty-four-year follow up

PSYCHIATRY AND CLINICAL NEUROSCIENCES, Issue 1 2009
Atsushi Nishida phd
Aims:, Prospective follow-up studies of high-risk children may help clarify the etiological factors in schizophrenia. While studies from North America, Europe and Israel have estimated the risk of schizophrenia at 7,16% in the offspring of an affected parent, no data have been reported for Asian populations. Method:, We started a follow up of the offspring of Japanese schizophrenia patients in 1978. We investigated the estimated risk of schizophrenia in 51 high-risk offspring at the 24-year follow up. The effects of the parents' status, including history of psychiatric hospitalization and social functioning, on the risk in the offspring were also investigated. Results:, The cumulative incidence of schizophrenia was 13.7 % and the lifetime prevalence was estimated to be 13.5 ± 4.8%. The association between the psychiatric hospitalization in the probands and the risk of schizophrenia in the offspring was not significant, and the Global Assessment of Functioning score was significantly lower in the probands with a history of psychiatric hospitalization than in those without such a history. Conclusions:, The risk of developing schizophrenia in Japanese high-risk offspring might be comparable with the Western results. The present study suggests that the severity of the disease or the level of social functioning may not significantly affect the risk in Japanese offspring. [source]

The psychosocial functioning of children and spouses of adults with ADHD

THE JOURNAL OF CHILD PSYCHOLOGY AND PSYCHIATRY AND ALLIED DISCIPLINES, Issue 4 2003
Klaus Minde
Background:, It is unclear what the impact of parental ADHD is on the day-to-day life of the rest of the family and how it contributes to the intergenerational transmission of this disorder. Method:, The psychosocial functioning of 23 spouses and 63 children of 33 families with an ADHD parent and 20 spouses and 40 children of 26 comparison families was examined. Both adults and their spouses were assessed for lifetime and current Axis I and Axis II diagnoses, present general psychiatric symptoms and their marital relationships. Children were screened for ADHD and other problems, using the C-DISC, CBLC, TRF and the Social Adjustment Inventory. Results:, Children with an ADHD parent had higher rates of psychopathology than those from comparison families. Children with ADHD had more co-morbidities than non-ADHD children. Family and marital functions were impaired in ADHD families regardless of the gender of the affected parent. Children without ADHD from families with one psychiatrically healthy parent did well while the behaviour of children with ADHD was always poor and not associated with parental mental health. Conclusion:, The results underscore the strong genetic contribution to ADHD and the need to carefully assess the non-ADHD parent as they seem to influence the well-being of non-ADHD children in families with an ADHD parent. [source]

Tests for genetic association using family data

GENETIC EPIDEMIOLOGY, Issue 2 2002
Mei-Chiung Shih
Abstract We use likelihood-based score statistics to test for association between a disease and a diallelic polymorphism, based on data from arbitrary types of nuclear families. The Nonfounder statistic extends the transmission disequilibrium test (TDT) to accommodate affected and unaffected offspring, missing parental genotypes, phenotypes more general than qualitative traits, such as censored survival data and quantitative traits, and residual correlation of phenotypes within families. The Founder statistic compares observed or inferred parental genotypes to those expected in the general population. Here the genotypes of affected parents and those with many affected offspring are weighted more heavily than unaffected parents and those with few affected offspring. We illustrate the tests by applying them to data on a polymorphism of the SRD5A2 gene in nuclear families with multiple cases of prostate cancer. We also use simulations to compare the power of these family-based statistics to that of the score statistic based on Cox's partial likelihood for censored survival data, and find that the family-based statistics have considerably more power when there are many untyped parents. The software program FGAP for computing test statistics is available at http://www.stanford.edu/dept/HRP/epidemiology/FGAP. Genet. Epidemiol. 22:128,145, 2002. © 2002 Wiley-Liss, Inc. [source]

Familial associations of rheumatoid arthritis with autoimmune diseases and related conditions

ARTHRITIS & RHEUMATISM, Issue 3 2009
Kari Hemminki
Objective In the era of genome-wide association studies, familial risks are used to estimate disease heritability and the likelihood of candidate-gene identification. This study was undertaken to estimate associations of rheumatoid arthritis (RA) with any of 33 autoimmune diseases and related conditions among parents and offspring, singleton siblings, twins, and spouses. Methods The Multigeneration Register in Sweden was used as a reliable source of information on Swedish families throughout the last century. Data on autoimmune diseases in individual family members were obtained through linkage to the Hospital Discharge Register. The standardized incidence ratio (SIR) was calculated as a measure of the relative risk of RA in family members of patients with RA or any of 33 other autoimmune diseases or related conditions, as compared with the relative risk of RA in those lacking an affected family member. Results Among a total of 447,704 patients, 47,361 were diagnosed as having RA. The SIRs for RA were 3.02 in offspring of affected parents, 4.64 in siblings, 9.31 in multiplex families, 6.48 in twins, and 1.17 in spouses. Significant associations with the familial risk of RA in offspring according to parental proband were observed for ankylosing spondylitis (SIR 2.96), localized scleroderma (SIR 2.40), Sjögren's syndrome (SIR 2.25), systemic lupus erythematosus (SIR 2.13), systemic sclerosis (SIR 1.65), Hashimoto thyroiditis/hypothyroidism (SIR 1.54), pernicious anemia (SIR 1.53), sarcoidosis (SIR 1.40), psoriasis (SIR 1.36), Wegener's granulomatosis (SIR 1.34), and asthma or polymyalgia rheumatica (SIR 1.32). Conclusion This is the first study to compare the familial risks of RA in relation to a large number of autoimmune diseases and related conditions using data from a single population. The high discordant familial risks in this population suggest that there is extensive genetic sharing between RA and the associated diseases. [source]