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The protease inhibitor S (PiS) and Z (PiZ) variants have been stated as the only genetic cause of chronic obstructive pulmonary disease (COPD) in Caucasians. However, its frequency in admixed populations is low. We aimed to identify genetic susceptibility between PiS (rs17580) and PiZ (rs28929474) polymorphisms with COPD related to tobacco smoking and biomass-burning smoke as well as to determine its frequencies in Mestizo and Amerindian populations from Mexico.

international journal of copd

&lt;p&gt;Heterozygous Genotype rs17580 AT (PiS) in &lt;em&gt;SERPINA1&lt;/em&gt; is Associated with COPD Secondary to Biomass-Burning and Tobacco Smoking: A Case–Control and Populational Study&lt;/p&gt;