Imprecise excision of the progenitor insertion, causing a deletion that results in a lack of detectable transcription from the NFAT a promoter.
NFATΔa1 mutants exhibit minimal differences in neuromuscular junction size.
Mutants have no obvious morphological defects.
Mutant larvae show normal survival in food containing 0.2M or 0.4M NaCl.
Stated to be lost.