Mutation in sequenced strain: frameshift (-2).
There is a 2 base deletion in CG8642 in iso-1, the reference sequence strain relative to RNA-seq reads from a different melanogaster strain (SRX029394). Two bases (TC) are missing between 2R:8613923 and 2R:8613924 in iso-1. This leads to a frameshift after codon 77 and early translation termination.