Misali na mummunar cutar kwayar halitta saboda rashin isasshen enzyme shine Tay<unk>Sachs cuta, wanda marasa lafiya ke da rashin enzyme hexosidaminase. Wani misali na rashi enzyme shine nau'in phenylketonuria na yau da kullun. Yawancin bambancin amino acid guda ɗaya a cikin enzyme phenylalanine hydroxylase, wanda ke haifar da matakin farko a cikin lalata phenylalanine, wanda ke haifar da tarawar phenylalanine da canje-canje masu alaƙa. Wasu suna lalata kai tsaye cikin aiki, da nakasa, daga cikin nau'ikan dubban nau'ikan da ke cikin jikin mutum na iya zama mai kisa. Wani misali na rashin lafiyar ƙwayar cuta mai haɗari shine rashin lafiya na ƙwayar cuta na ƙwayar cuta, wanda zai iya haifar da lalacewar ƙwayar cuta na ƙwayar cuta. Wani misali na rashin lafiyar ƙwayar cuta shine rashin lafiyar ƙwayar cuta, wanda zai iya haifar da lalacewar ƙwayar cuta ta jiki.
homeostasis