,16 In the rcd-1 mutant canine model of RP, dose-dependent photoreceptor protection was observed with CNTF release from revakinagene taroretcel-lwey of 0 ng/day (parental/non-transfected cell line that does not release detectable levels of CNTF) through 15 ng/day, with therapeutic benefit demonstrated above 0.2 ng/day.16 The gene discussed is CNTF; the disease is retinitis pigmentosa 1.