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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Eur+J+Hum+Genet 2017 ; 25 (8): 1015-9 Nephropedia Template TP
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Defects in the acid phosphatase ACPT cause recessive hypoplastic amelogenesis imperfecta #MMPMID28513613
Smith CE; Whitehouse LL; Poulter JA; Brookes SJ; Day PF; Soldani F; Kirkham J; Inglehearn CF; Mighell AJ
Eur J Hum Genet 2017[Aug]; 25 (8): 1015-9 PMID28513613show ga
We identified two homozygous missense variants (c.428C>T, p.(T143M) and c.746C>T, p.(P249L)) in ACPT, the gene encoding acid phosphatase, testicular, which segregates with hypoplastic amelogenesis imperfecta in two unrelated families. ACPT is reported to play a role in odontoblast differentiation and mineralisation by supplying phosphate during dentine formation. Analysis by computerised tomography and scanning electron microscopy of a primary molar tooth from an individual homozygous for the c.746C>T variant revealed an enamel layer that was hypoplastic, but mineralised with prismatic architecture. These findings implicate variants in ACPT as a cause of early failure of amelogenesis during the secretory phase.