Document Detail

Weight-adjusted genome scan analysis for mapping quantitative trait Loci for menarchal age.
MedLine Citation:
PMID:  16804047     Owner:  NLM     Status:  MEDLINE    
CONTEXT: Twin and family studies indicate that genetic factors contribute to the variability of age at menarche (AAM), a multifactorial trait of major importance to human reproductive success. Individual variability of premenarcheal fatness is known to be an important determinant of AAM. OBJECTIVE: The objective of the study was mapping quantitative trait loci (QTLs) for AAM. DESIGN AND METHODS: AAM was assessed in 98 sister pairs of recent European ancestry whose growth charts were available. There was a negative correlation between menarcheal body weight sd score (SDS) and AAM (r = 0.47, P < 0.0001). We designed a genome scan approach and used the variance components model implemented in Merlin for quantitative traits to evaluate linkage of AAM and AAM adjusted for menarcheal weight SDS to 418 genome-wide microsatellites. RESULTS: Multipoint linkage analysis for AAM revealed nominal QTLs defined by LOD scores between 1.06 and 1.69 on chromosomes 1p, 1q, 7p, 8q, 16p, 19q, and 20q. The genome scan for AAM adjusted for menarcheal weight SDS revealed several QTLs with strongly suggestive LOD scores in 16q21 (LOD = 3.33), 16q12 (LOD = 3.12), and 8p12 (LOD = 2.18) and a number of other nominally significant QTLs yet viewed as hypothetical. CONCLUSIONS: We found several regions that may contain determinants of AAM, but there is still a long series of steps to confirm these QTLs and identify the genomic polymorphisms implicated in AAM variability.
Anya Rothenbuhler; Delphine Fradin; Simon Heath; Hervé Lefevre; Claire Bouvattier; Marc Lathrop; Pierre Bougnères
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-06-27
Journal Detail:
Title:  The Journal of clinical endocrinology and metabolism     Volume:  91     ISSN:  0021-972X     ISO Abbreviation:  J. Clin. Endocrinol. Metab.     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-09-08     Completed Date:  2006-10-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375362     Medline TA:  J Clin Endocrinol Metab     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3534-7     Citation Subset:  AIM; IM    
Department of Pediatric Endocrinology and U56, Institut National de la Santé et de la Recherche Médicale, Hôpital Saint-Vincent de Paul, 75014 Paris, France.
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MeSH Terms
Age Factors
Body Weight
Chromosome Mapping*
DNA / genetics
Lod Score
Menarche / genetics*
Microsatellite Repeats / genetics
Quantitative Trait Loci / genetics*
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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