Ullrich congenital muscular dystrophy (UCMD) represents the most severe subtype of collagen VI-related dystrophies (COL6-RDs), a spectrum of rare extracellular matrix disorders affecting skeletal muscle and connective tissue. Here, we generated an induced pluripotent stem cell (iPSC) line (CRICKi021-A) from a UCMD patient with de novo dominant-negative mutation in COL6A1 gene by reprogramming dermal fibroblasts using a non-integrating mRNA-based protocol. The resulting human iPSCs displayed normal morphology, expressed pluripotency-associated markers and differentiated into the three germ layers. This new COL6A1-mutant iPSC line can be employed for disease modelling and for investigating potential therapies for COL6-RDs.