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Berkay, Ezgi Gizem; Elkanova, Leyla; Kalayci, Tugba; Uludag Alkaya, Dilek; Altunoglu, Umut; Cefle, Kivanc; Mihci, Ercan; Nur, Banu; Tasdelen, Elifcan; Bayramoglu, Zuhal; Karaman, Volkan; Toksoy, Guven; Gunes, Nilay; ozturk, Sukru; Palanduz, Sukru; Kayserili, Hulya; Tuysuz, Beyhan; Uyguner, Zehra Oya
{ "DOI": "10.1002/ajmg.a.62261", "abstract": "Loss or decrease of function in runt-related transcription factor 2 encoded by RUNX2 is known to cause a rare autosomal-dominant skeletal disorder, cleidocranial dysplasia (CCD). Clinical spectrum and genetic findings in 51 CCD patients from 30 unrelated families are herein presented. In a majority of the patients, facial abnormalities, such as delayed fontanel closure (89%), parietal and frontal bossing (80%), metopic groove (77%), midface hypoplasia (94%), and abnormal mobility of shoulders (90%), were recorded following clinical examination. In approximately one-half of the subjects, wormian bone (51%), short stature (43%), bell-shaped thorax (42%), wide pubic symphysis (50%), hypoplastic iliac wing (59%), and chef's hat sign (44%) presented in available radiological examinations. Scoliosis was identified in 28% of the patients. Investigation of RUNX2 revealed small sequence alterations in 90% and gross deletions in 10% of the patients; collectively, 23 variants including 11 novel changes (c.29_30insT, c.203delAinsCG, c.423 + 2delT, c.443_454delTACCAGATGGGAinsG, c.505C > T, c.594_595delCTinsG, c.636_637insC, c.685 + 5G > A, c.1088G > T, c.1281delC, Exon 6-9 deletion) presented high allelic heterogeneity. Novel c.29_30insT is unique in affecting the P1-driven long isoform of RUNX2, which is expected to disrupt the N-terminal region of RUNX2; this was shown in two unrelated phenotypically discordant patients. The clinical findings highlighted mild intra-familial genotype-phenotype correlation in our CCD cohort.", "author": [ { "family": "Berkay", "given": " Ezgi Gizem" }, { "family": "Elkanova", "given": " Leyla" }, { "family": "Kalayci", "given": " Tugba" }, { "family": "Uludag Alkaya", "given": " Dilek" }, { "family": "Altunoglu", "given": " Umut" }, { "family": "Cefle", "given": " Kivanc" }, { "family": "Mihci", "given": " Ercan" }, { "family": "Nur", "given": " Banu" }, { "family": "Tasdelen", "given": " Elifcan" }, { "family": "Bayramoglu", "given": " Zuhal" }, { "family": "Karaman", "given": " Volkan" }, { "family": "Toksoy", "given": " Guven" }, { "family": "Gunes", "given": " Nilay" }, { "family": "ozturk", "given": " Sukru" }, { "family": "Palanduz", "given": " Sukru" }, { "family": "Kayserili", "given": " Hulya" }, { "family": "Tuysuz", "given": " Beyhan" }, { "family": "Uyguner", "given": " Zehra Oya" } ], "container_title": "AMERICAN JOURNAL OF MEDICAL GENETICS PART A", "id": "231512", "issue": "8", "issued": { "date-parts": [ [ 2021, 1, 1 ] ] }, "page": "2488-2495", "title": "Skeletal and molecular findings in 51 Cleidocranial dysplasia patients from Turkey", "type": "article-journal", "volume": "185" }
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