Gripp KW, McDonald-McGinn DM, La Rossa D, McGain D, Federman N, Vlachos A, Glader BE, McKenzie SE, Lipton JM, Zackai EH. Bilateral microtia and cleft palate in cousins with Diamond-Blackfan anemia.
AMERICAN JOURNAL OF MEDICAL GENETICS 2001;
101:268-74. [PMID:
11424144 DOI:
10.1002/ajmg.1329]
[Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We report on maternal first cousins with bilateral microtia, micrognathia, cleft palate and hematologic findings of Diamond-Blackfan anemia (DBA). The similarity of findings shared between our cases and a female reported by Hasan and Inoue [1993] suggests that this is a distinctive syndrome, rather than a chance association. DBA is a heterogeneous disorder, caused in about 25% of cases by heterozygous mutations in the RPS19 gene (DBA1). Mutation analysis in our cases did not show an RPS19 mutation, and 2 alleles were present in each. Segregation analysis for DBA1 on chromosome 19 and DBA2 on 8p23 was not consistent with linkage. We conclude that this syndrome of microtia, cleft palate and DBA is not allelic to known DBA loci.
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