AL (Light Chain) Amyloidosis
The most common systemic form. Caused by an abnormal plasma cell clone in the bone marrow. This is the focus of AL Pathways.
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What Is AL Amyloidosis?
It is a question most people have never had to ask. If you are here, something has changed and we want to help you understand it.
Bone marrow → Abnormal light chains → Amyloid fibres
A Disease of Misfolded Proteins
AL amyloidosis happens when the bone marrow produces abnormal proteins called light chains. Instead of doing their job, these proteins fold incorrectly and clump together, forming fibres that deposit in your organs and quietly disrupt the way they work. It isn't a cancer, though it starts from an abnormal cell in the bone marrow. And unlike many diseases, it doesn't announce itself with obvious symptoms. It hides.
Why “The Chameleon Disease”?
AL amyloidosis wears many faces. Depending on which organs are affected — heart, kidneys, liver, nerves, digestive system or soft tissue — it produces completely different symptoms in different people. For one person it looks like heart failure. For another it looks like kidney disease. For someone else it feels like carpal tunnel syndrome or irritable bowel syndrome. Each time it slips past as something else, until finally someone looks deeper.
AL Amyloidosis vs. Other Types
There are several forms of amyloidosis and they are not the same disease. Getting the right diagnosis matters because treatments that work for one type will not necessarily work for another.
ATTR Amyloidosis
Caused by misfolded transthyretin protein. Can be hereditary or age-related. A different disease with different treatments.
AA Amyloidosis
Triggered by chronic inflammation or infection. Less common today but still serious and life-changing when it occurs.
Rare. But Not Invisible
AL amyloidosis affects an estimated 38,563 people in the US alone and that number is growing as awareness and diagnosis improve. It's rare. But for the people living with it, and the people who love them, it is very real. And it is treatable, especially when caught early.
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people affected globally