hrp0092p2-37 | Bone, Growth Plate and Mineral Metabolism | ESPE2019

An Unusual Case of Hyperparathyroidism: Familial Hypomagnesemia with Hypercalciuria and Nephrocalcinosis (FHHNC) Associated with Mutations in CLDN19

Lin Yuezhen

Background: FHHNC is an autosomal recessive disorder caused by mutations in either claudin 19 or claudin 16. This is a rare disorder of magnesium metabolism with fewer than 400 reported cases throughout the literature. It is also a somewhat underdiagnosed disorder, not being commonly observed.Case presentation: Patient was a 2 years old female who was incidentally noted to have nephrocalcinosis as part of evaluation for ...

hrp0089p2-p211 | GH & IGFs P2 | ESPE2018

Growth Hormone Treatment for Short Stature Associated with TRNT1 Deficiency: A Case Series

Lin Yuezhen

Background: TRNT1 (CCA-adding transfer RNA nucleotidyl transferase) enzyme deficiency is a newly reported inborn error of metabolism caused by defective post-transcriptional modification of mitochondrial and cytosolic transfer RNAs (tRNAs). TRNT1 mutations cause a complex multisystem disease leading to manifestations in most organs. We here described the effect of growth hormone (GH) treatment on short stature in two siblings with TRNT1 deficiency.Case p...