Abstract:
:The present French-German cooperative study focuses on the genotype-phenotype relationship of mutations of the FMR-1 gene and psychiatric conditions in mothers with a full mutation in the FMR-1 gene of fra-X children (n=13), mothers with a premutation in the FMR-1 gene of fra-X children (n=61), as well as premutated siblings of these mothers without affected children (n=17) and two non-mutated control groups: (1) siblings of these mothers with normal CGG repeat (n=18); and (2) mothers of non-fra-X autistic children (n=42). Mothers with a full mutation in the FMR-1 gene and mothers with a premutation in the FMR-1 gene did not differ in the frequency of any axis I disorder; however, both groups were diagnosed with social phobia more often than the control group of mothers of autistic children. Moreover, mothers with a premutation in the FMR-1 gene of fra-X children and their siblings with the premutation (without affected offspring) revealed a similar frequency of social phobia. Furthermore avoidant personality disorder was more common in groups of carriers of the full premutation than in siblings without mutation or than the control group of mothers with autistic children. On the basis of our data, we therefore suggest that social avoidance (expressed as social phobia or avoidant personality disorder) has been underestimated in previous studies of carriers with the FMR-1 full mutation or premutation. Comorbidity of axis I and axis II psychiatric diagnoses was mainly restricted to the group of carriers of the full mutation and carriers of the premutation of FMR-1. Correlations between size of CGG repeat and IQ as well as CGG and age of onset of axis I diagnosis were non-significant. IQ of subjects had no impact on presence or absence of axis I and/or axis II diagnoses.
journal_name
Psychiatry Resjournal_title
Psychiatry researchauthors
Franke P,Leboyer M,Gänsicke M,Weiffenbach O,Biancalana V,Cornillet-Lefebre P,Croquette MF,Froster U,Schwab SG,Poustka F,Hautzinger M,Maier Wdoi
10.1016/s0165-1781(98)00055-9subject
Has Abstractpub_date
1998-08-17 00:00:00pages
113-27issue
2eissn
0165-1781issn
1872-7123pii
S0165178198000559journal_volume
80pub_type
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