Other patients have a higher level of AAT in their blood, and therefore have a less severe condition.Persons with this deficiency may also develop liver disease.SymptomsSymptoms may include any of the following:Shortness of breath with and without exertion, and other symptoms of chronic obstructive pulmonary disease (COPD)Symptoms of severe liver disease (cirrhosis)Unintentional weight lossWheezin