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The genetic defect in multiple endocrine neoplasia type 2A maps next to the centromere of chromosome 10. 1990

J S Wu, and N L Carson, and S Myers, and A J Pakstis, and J R Kidd, and C M Castiglione, and L Anderson, and L S Hoyle, and M Genel, and M Verdy
Department of Human Genetics, Yale University School of Medicine, New Haven, CT 06510.

Multiple endocrine neoplasia type 2A (MEN2A) is a rare cancer syndrome that is inherited in an apparently autosomal dominant fashion. Previous linkage studies had assigned the MEN2A locus to chromosome 10 in the pericentromeric region. We recently have described several new easily scorable RFLPs for the chromosome 10-specific alpha satellite DNA (the D10Z1) locus that is known, on the basis of previous in situ hybridization experiments, to lie at the centromere. We report here tight linkage between MEN2A and D10Z1, as demonstrated by a maximum lod score of 12.02 at the recombination frequency of zero (1-lod-unit support interval 0-4 cM), indicating that the genetic defect in MEN2A lies in the immediate vicinity of the centromere. By means of a set of ordered polymorphic DNA markers from the pericentromeric region, multipoint as well as pairwise linkage analyses place the MEN2A locus at the middle of a small region (approximately 11 cM) bracketing the centromere with FNRB (at 10p11.2) and RBP3 (at 10q11.2) on either side, providing further support for the centromeric location of the MEN2A locus. Marked sex difference in recombination frequencies exists in this pericentromeric region: significantly (P less than .01) more female than male crossovers were observed across all of the adjacent intervals D10S24-FNRB, FNRB-D10Z1, and D10Z1-RBP3. However, a sex difference was not seen in the 7-cM interval from RBP3 to D10S5, suggesting that large variation in the sex difference in recombination can occur over small chromosomal regions.(ABSTRACT TRUNCATED AT 250 WORDS)

UI MeSH Term Description Entries
D008040 Genetic Linkage The co-inheritance of two or more non-allelic GENES due to their being located more or less closely on the same CHROMOSOME. Genetic Linkage Analysis,Linkage, Genetic,Analyses, Genetic Linkage,Analysis, Genetic Linkage,Genetic Linkage Analyses,Linkage Analyses, Genetic,Linkage Analysis, Genetic
D008297 Male Males
D009377 Multiple Endocrine Neoplasia A group of autosomal dominant diseases characterized by the combined occurrence of tumors involving two or more ENDOCRINE GLANDS that secrete PEPTIDE HORMONES or AMINES. These neoplasias are often benign but can be malignant. They are classified by the endocrine glands involved and the degree of aggressiveness. The two major forms are MEN1 and MEN2 with gene mutations on CHROMOSOME 11 and CHROMOSOME 10, respectively. Adenomatosis, Familial Endocrine,Endocrine Neoplasia, Multiple,Multiple Endocrine Neoplasia Syndrome,Neoplasia, Multiple Endocrine,Neoplasms, Multiple Endocrine,Adenomatosis, Multiple Endocrine,Familial Endocrine Adenomatosis,Multiple Endocrine Adenomatosis,Multiple Endocrine Adenopathy,Multiple Endocrine Neoplasia Syndromes,Multiple Endocrine Neoplasms,Adenomatoses, Familial Endocrine,Adenomatoses, Multiple Endocrine,Adenopathies, Multiple Endocrine,Adenopathy, Multiple Endocrine,Endocrine Adenomatoses, Familial,Endocrine Adenomatoses, Multiple,Endocrine Adenomatosis, Familial,Endocrine Adenomatosis, Multiple,Endocrine Adenopathies, Multiple,Endocrine Adenopathy, Multiple,Endocrine Neoplasms, Multiple,Familial Endocrine Adenomatoses,Multiple Endocrine Adenomatoses,Multiple Endocrine Adenopathies
D010375 Pedigree The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition. Family Tree,Genealogical Tree,Genealogic Tree,Genetic Identity,Identity, Genetic,Family Trees,Genealogic Trees,Genealogical Trees,Genetic Identities,Identities, Genetic,Tree, Family,Tree, Genealogic,Tree, Genealogical,Trees, Family,Trees, Genealogic,Trees, Genealogical
D012150 Polymorphism, Restriction Fragment Length Variation occurring within a species in the presence or length of DNA fragment generated by a specific endonuclease at a specific site in the genome. Such variations are generated by mutations that create or abolish recognition sites for these enzymes or change the length of the fragment. RFLP,Restriction Fragment Length Polymorphism,RFLPs,Restriction Fragment Length Polymorphisms
D002503 Centromere The clear constricted portion of the chromosome at which the chromatids are joined and by which the chromosome is attached to the spindle during cell division. Centromeres
D002879 Chromosomes, Human, Pair 10 A specific pair of GROUP C CHROMOSOMES of the human chromosome classification. Chromosome 10
D005260 Female Females
D005819 Genetic Markers A phenotypically recognizable genetic trait which can be used to identify a genetic locus, a linkage group, or a recombination event. Chromosome Markers,DNA Markers,Markers, DNA,Markers, Genetic,Genetic Marker,Marker, Genetic,Chromosome Marker,DNA Marker,Marker, Chromosome,Marker, DNA,Markers, Chromosome
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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