UASt regulatory sequences drive expression of the full-length Hsap\TRPV4 open reading frame, mutated to carry a R269C amino acid substitution (a neuropathy-causing mutation) plus a second mutation (M680K) that blocks the ion-conducting pore.
Expressing Hsap\TRPV4R269C.M680K.UAS under the control of Scer\GAL4ppk.PU leads to third instar larvae showing a loss of C4da neuron axonal projections into the ventral nerve cord.