Is there a genotype-phenotype correlation in primary hyperoxaluria type 1?

There is ongoing debate about a genotype-phenotype correlation in patients with primary hyperoxaluria type 1 and specific AGXT mutations. However, other determinants like environmental factors or modifer genes may play a pivotal role in the heterogeneity of the disease. The report of Lorenzo and co-workers highlights this situation, presenting data of a whole population with just one specific AGXT mutation.