FlyBase curator comment: "hypophosphatemic nephrolithiasis/osteoporosis 2" is associated with mutations in the CG10939 ortholog, human SLC9A3R1 (aka NHERF1).
CG109395a homozygous adults present numerous birefringent stones in the Malpighian tubules's lumen; these stones start dissolving with pH > 6.7.