Ribose 5-phosphate isomerase deficiency

Definition:

Ribose 5-phosphate isomerase (RPI) deficiency is a very rare enzymopathy of the pentose phosphate pathway with one sole diagnosed case. The patient presented with progressive leukoencephalopathy and peripheral neuropathy. Systematic metabolic profiling identified elevated levels of arabitol and ribitol in affected brain regions and body fluids. RPI gene-sequence analysis revealed a frameshift and a missense mutation.

References:

[1]. Jojanneke H J Huck, et al. Ribose-5-phosphate isomerase deficiency: new inborn error in the pentose phosphate pathway associated with a slowly progressive leukoencephalopathy. Am J Hum Genet. 2004 Apr;74(4):745-51. [Content Brief]

[2]. Mirjam M C Wamelink, et al. The difference between rare and exceptionally rare: molecular characterization of ribose 5-phosphate isomerase deficiency. J Mol Med (Berl). 2010 Sep;88(9):931-9. [Content Brief]

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