ReNeuron has reported further improvements in the vision of patients treated with its cell therapy. The mean increase in visual acuity across the three retinitis pigmentosa (RP) patients now stands at 23 letters, well above the level deemed clinically meaningful by the FDA. British biotech ReNeuron is testing its human retinal progenitor cell therapy candidate in advanced RP patients with some remaining retinal function. ReNeuron initiated the trial to validate its belief that the cells preserve existing photoreceptors and mature into functional photoreceptors, thereby preserving and possibly restoring vision. Source: Fierce Biotech 26/4/2019