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Alpha-1 and Your Lungs

Whether you've already been diagnosed with Alpha-1 antitrypsin deficiency (AATD) or you're just beginning to explore it, this is your place to start. Alpha-1 is a genetic condition—meaning you're born with it. Alpha-1 can affect your lungs, and many people don't know they have it. Testing is the only way to know whether Alpha-1 may be affecting you or your family.

Image of a woman holding a childhood photo, with words indicating her name is Sophia, her age is 56, and her diagnosis of AATD happened at 44 years of age, with the words “born with it” written across the image.

Get the full picture of your risk by uncovering a hidden cause of lung disease.

Even if you have another lung condition, you could have Alpha-1. In fact, 90% of people living with Alpha-1 don't know it. Genetic testing is the only way to know for sure.

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Already diagnosed? Understand alpha-1 protein levels.

Your SERPINA1 gene—sometimes described using combinations such as MM, MZ, SZ, or ZZ—is one part of your Alpha-1 profile. To understand your risk, it's important to get the full picture of your Alpha-1 diagnosis.

Living with Alpha-1

An Alpha-1 antitrypsin diagnosis is a starting point, not a setback. Discover ways to help support your lung health and take control of your Alpha-1.

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Take steps to help protect your lung health

Regular monitoring, knowing your alpha-1 protein levels, avoiding smoking and lung irritants, and maintaining regular care are important steps for people affected by Alpha-1. Find tools and resources to help you stay informed and prepared.

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*Each patient story reflects the real-life experiences of individuals diagnosed with Alpha-1. Individual experiences may vary. Patients were compensated for their time by Sanofi.

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Frequently asked questions

What is Alpha-1 antitrypsin deficiency?

Alpha-1 is an inherited genetic condition that can cause low or below normal levels of alpha-1 protein.

What is alpha-1 protein?

Alpha-1 antitrypsin is a protein made primarily in the liver that helps protect lung tissue from damage.

What does Alpha-1 antitrypsin deficiency cause?

Alpha-1 can increase the risk of lung diseases such as emphysema and COPD, as well as liver disease.

How common is Alpha-1 antitrypsin deficiency?

Alpha-1 is considered rare and is estimated to affect 70,000-100,000 individuals in the US, with many remaining undiagnosed. It is identified through testing.


MAT-US-2604698-v3.0-10/2026. Last updated October 2026.