The following information accompanied stocks donated to the Bloomington Drosophila Stock Center by Joshua Mast and Nina DiPrimio, Perlara PBC. Npc1aV890M - CRISPR/Cas9-mediated homologous dependent repair was used to make amino acid change V890M designed to mimic the V889M change found in a human NPC1 variant associated with Neimann-Pick disease. Npc1aA1015T - CRISPR/Cas9-mediated homologous dependent repair was used to make amino acid change A1015T designed to mimic the A1017T change found in a human NPC1 variant associated with Neimann-Pick disease.