Coexistence of Duarte 1 and Duarte 2 variants of galactosemia with extrahepatic biliary atresia

Ramandeep Singh, Ketan Kulkarni, Gurjit Kaur, Babu Ram Thapa, Rajendra Prasad

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DOI: 10.4236/health.2010.24041                

Abstract

Galactosemia is an autosomal recessive disorder caused by deficient or absent activities of one of the three enzymes involved in the galactose metabolic pathway. The predominant form is classic type galactosemia caused by severe reduction or absence of the galactose- 1-phosphate uridyl transferase (GALT) enzyme. Coexistence of extrahepatic biliary atresia (EHBA) with Duarte 1 and 2 variants of galactosemia has not been described earlier. Here we report a case of EHBA with concordant Duarte 1 and 2 variants of galactosemia in an infant with cholestasis. Genetic analysis of the index patient for galactosemia revealed presence of Duarte 1/Duarte 2 variants of galactosemia with genotype N314D-L218L/N314D-G1105C-GI391A- G1323A-5’UTR-119delGTCA. Clinical evaluation of the patient showed the presence of EHBA. Henceforth, it may be hypothesized that EHBA may have a genetic basis with simultaneous involvement of the GALT gene.

Keywords

Duarte 1; Duarte 2; Extrahepatic Biliary Atresia; Galactosemia; Galatose-1-Phosphate Uridyl Transferase Gene; Los Angles

Conflicts of Interest

The authors declare no conflicts of interest.

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