We did not identify variants in any of the 11 known genes causing congenital nemaline myopathy (TPM3, NEB, ACTA1, TPM2, TNNT1, KBTBD13, CFN2, KLHL40, KLHL41, LMOD3, MYPN). The gene discussed is TNNT1; the disease is congenital nemaline myopathy.