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MM

MM is the normal genotype.

People with the MM genotype do not have alpha-1 antitrypsin deficiency, and do not have increased risks related to this condition.

Alpha-1 at MUSC – Genetic Counseling

This is the normal genotype. A person with two M alleles does not have alpha-1 antitrypsin deficiency and is not a carrier. A person with the MM result does not have increased risks related to alpha-1 antitrypsin deficiency.

Alpha-1 Alleles – AlphaNet