Two phase I/II trials, one of which for recessive dystrophic EB (COL7A1, EudraCT‐No 2015‐004592‐74) and the other one for junctional EB (COL17A, EudraCT‐No 2016‐000095‐17), are currently recruiting. The gene discussed is COL7A1; the disease is epidermolysis bullosa.