LRRC51 and TOMT were originally considered as alternative reading frames, LRTOMT1 and LRTOMT2 of the same LRTOMT gene in primates. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay.