Any nemaline myopathy in which the cause of the disease is a mutation in the CFL2 gene. The disease is nemaline myopathy 7 (MONDO_0012538). Also known as: CFL2 nemaline myopathy, NEM7, nemaline myopathy 7, autosomal recessive, nemaline myopathy caused by mutation in CFL2, nemaline myopathy type 7.