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  • Title: Fifteen new mutations (-195C>T, L-12X, 298-2A>G, T117N, A159T, R229S, 997+2T>A, E274X, A331T, H364R, D389G, 1256delC, R433H, N461I, C472S) in the tissue-nonspecific alkaline phosphatase (TNSALP) gene in patients with hypophosphatasia.
    Author: Taillandier A, Cozien E, Muller F, Merrien Y, Bonnin E, Fribourg C, Simon-Bouy B, Serre JL, Bieth E, Brenner R, Cordier MP, De Bie S, Fellmann F, Freisinger P, Hesse V, Hennekam RC, Josifova D, Kerzin-Storrar L, Leporrier N, Zabot MT, Mornet E.
    Journal: Hum Mutat; 2000 Mar; 15(3):293. PubMed ID: 10679946.
    Abstract:
    Hypophosphatasia is a rare inherited disorder characterized by defective bone mineralization and deficiency of serum and liver/bone/kidney-type alkaline phosphatase (L/B/K ALP) activity. We report the characterization of tissue-nonspecific alkaline phosphatase (TNSALP) gene mutations in a series of 12 families affected by severe or mild hypophosphatasia. Twenty distinct mutations were found, 5 of which were previously reported. Nine of the 15 new mutations were missense mutations (T117N, A159T, R229S, A331T, H364R, D389G, R433H, N461I, and C472S). The others were 2 nonsense mutations (L-12X and E274X), one single nucleotide deletion (1256delC), 2 mutations affecting splicing (298-2A>G, 997+2T>A), and a mutation in the major transcription start site (-195C>T). Hum Mutat 15:293, 2000.
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