Which of the following is not the cause of macrocytic anaemia ?-
Orotic aciduria
Abetalipoproteinemia
Lesh nyhan disease
Transcobalamine deficiency
Lesch nyhan syndrome is due to deficiency are complete or paial absence of HGP enzyme. It does not involve any type of anaemia Reference : textbbook: pathologic basis of disease Author : Robbins and cotron , volume2 , page number 1215
Haematology