PMID- 10521292 OWN - NLM STAT- MEDLINE DCOM- 19991210 LR - 20220419 IS - 0002-9297 (Print) IS - 0002-9297 (Linking) VI - 65 IP - 5 DP - 1999 Nov TI - Mutation analysis of core binding factor A1 in patients with cleidocranial dysplasia. PG - 1268-78 AB - Cleidocranial dysplasia (CCD) is a dominantly inherited disorder characterized by patent fontanelles, wide cranial sutures, hypoplasia of clavicles, short stature, supernumerary teeth, and other skeletal anomalies. We recently demonstrated that mutations in the transcription factor CBFA1, on chromosome 6p21, are associated with CCD. We have now analyzed the CBFA1 gene in 42 unrelated patients with CCD. In 18 patients, mutations were detected in the coding region of the CBFA1 gene, including 8 frameshift, 2 nonsense, and 9 missense mutations, as well as 2 novel polymorphisms. A cluster of missense mutations at arginine 225 (R225) identifies this residue as crucial for CBFA1 function. In vitro green fluorescent protein fusion studies show that R225 mutations interfere with nuclear accumulation of CBFA1 protein. There is no phenotypic difference between patients with deletions or frameshifts and those with other intragenic mutations, suggesting that CCD is generally caused by haploinsufficiency. However, we were able to extend the CCD phenotypic spectrum. A missense mutation identified in one family with supernumerary teeth and a radiologically normal skeleton indicates that mutations in CBFA1 can be associated exclusively with a dental phenotype. In addition, one patient with severe CCD and a frameshift mutation in codon 402 had osteoporosis leading to recurrent bone fractures and scoliosis, providing first evidence that CBFA1 may help maintain adult bone, in addition to its function in bone development. FAU - Quack, I AU - Quack I AD - Department of Hematology, University of Freiburg Medical Center, Freiburg, Germany. FAU - Vonderstrass, B AU - Vonderstrass B FAU - Stock, M AU - Stock M FAU - Aylsworth, A S AU - Aylsworth AS FAU - Becker, A AU - Becker A FAU - Brueton, L AU - Brueton L FAU - Lee, P J AU - Lee PJ FAU - Majewski, F AU - Majewski F FAU - Mulliken, J B AU - Mulliken JB FAU - Suri, M AU - Suri M FAU - Zenker, M AU - Zenker M FAU - Mundlos, S AU - Mundlos S FAU - Otto, F AU - Otto F LA - eng SI - GENBANK/AF001443 SI - GENBANK/AF001444 SI - GENBANK/AF001445 SI - GENBANK/AF001446 SI - GENBANK/AF001447 SI - GENBANK/AF001448 SI - GENBANK/AF001449 SI - GENBANK/AF001450 PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Hum Genet JT - American journal of human genetics JID - 0370475 RN - 0 (Core Binding Factor Alpha 1 Subunit) RN - 0 (Core Binding Factors) RN - 0 (Luminescent Proteins) RN - 0 (Neoplasm Proteins) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Transcription Factors) RN - 147336-22-9 (Green Fluorescent Proteins) SB - IM MH - Bone and Bones/diagnostic imaging/pathology MH - Cell Line MH - Cleidocranial Dysplasia/diagnostic imaging/*genetics MH - Core Binding Factor Alpha 1 Subunit MH - Core Binding Factors MH - DNA Mutational Analysis MH - Frameshift Mutation MH - Green Fluorescent Proteins MH - Humans MH - Luminescent Proteins MH - Microscopy, Fluorescence MH - Molecular Sequence Data MH - Mutation, Missense MH - *Neoplasm Proteins MH - Phenotype MH - Polymorphism, Genetic MH - Radiography MH - Recombinant Fusion Proteins MH - Sequence Deletion MH - Tooth/pathology MH - Transcription Factors/*genetics MH - Transfection PMC - PMC1288279 EDAT- 1999/10/16 09:00 MHDA- 2000/03/21 09:00 CRDT- 1999/10/16 09:00 PHST- 1999/10/16 09:00 [pubmed] PHST- 2000/03/21 09:00 [medline] PHST- 1999/10/16 09:00 [entrez] AID - S0002-9297(07)62133-8 [pii] AID - 10.1086/302622 [doi] PST - ppublish SO - Am J Hum Genet. 1999 Nov;65(5):1268-78. doi: 10.1086/302622.