The path to an hATTR amyloidosis diagnosis

Hereditary ATTR (hATTR) amyloidosis is a rare disease with symptoms that may be similar to those of other conditions. These similarities may lead to misdiagnosis or delays in diagnosis.

The following steps can help you to have an informed conversation with your doctor and ensure they have the information needed to help make an accurate assessment of your risk for hATTR amyloidosis.


Learn more about hATTR amyloidosis

The more you know about hATTR amyloidosis, the more prepared you’ll be to recognize the symptoms.

Take note of symptoms

By keeping track of hATTR amyloidosis symptoms you are experiencing, and sharing the notes with your doctor, they can get a more accurate picture of your condition.

Talk to your family

hATTR amyloidosis is an inherited condition, so while your family members may not have been diagnosed with the condition, they may have experienced symptoms similar to yours.

It’s important to talk to your family about any family history that may be related to hATTR amyloidosis.

Talk to your doctor about symptoms and family history

Armed with your knowledge of potential symptoms and family history, it’s time to discuss hATTR amyloidosis with your doctor.

Be prepared to talk to your doctor about your concerns, including the fact that there are diseases with symptoms that may appear to be similar to those of hATTR amyloidosis and misdiagnosis may be common.

Conditions with symptoms similar to that of hATTR amyloidosis

This list may not be all-inclusive.

Alcoholic neuropathy

Amyotrophic lateral sclerosis (ALS)

Amyloid A (AA) amyloidosis

Amyloid light chain (AL) amyloidosis

Carpal tunnel syndrome

Charcot-Marie-Tooth (CMT) disease

Chronic inflammatory demyelinating polyneuropathy (CIDP)

Diabetic neuropathy

Fabry disease

Hypertensive heart disease

Hypertrophic cardiomyopathy

Idiopathic polyneuropathy

Motor neuron disease

Motor polyradiculoneuropathy

Paraneoplastic neuropathy

Confirm diagnosis with genetic testing

If your doctor thinks you may be at risk for hATTR amyloidosis, they may recommend you work with a genetic counselor. Genetic counselors are trained healthcare professionals who can help you and your family learn more about the condition, the chances of you and your family inheriting it, whether genetic testing is right for you, how testing works, and what may happen after a diagnosis.

A genetic test will determine whether a person carries one of the 120 or more gene mutations in the transthyretin (TTR) gene associated with hATTR amyloidosis. Once a gene mutation is identified, family members of an affected individual can use this information to help determine their own risk.

Genetic counseling and testing options


Alnylam Act® logo

Alnylam Pharmaceuticals sponsors no-charge, third-party genetic counseling and testing for individuals who may carry one of the 120 or more gene mutations known to be associated with hATTR amyloidosis.

Learn more about Alnylam Act® »


The Alnylam Act® program was created to provide access to genetic testing and counseling to patients as a way to help people make more informed decisions about their health.

  • While Alnylam provides financial support for this program, tests and services are performed by independent third parties
  • Healthcare professionals must confirm that patients meet certain criteria to use the program
  • Alnylam receives de-identified patient data from this program, but at no time does Alnylam receive patient-identifiable information. Alnylam uses healthcare professional contact information for research and commercial purposes
  • Genetic testing is available in the US and certain other countries. Genetic counseling is available in the US
  • Healthcare professionals or patients who use this program have no obligation to recommend, purchase, order, prescribe, promote, administer, use, or support any Alnylam product
  • No patients, healthcare professionals, or payers, including government payers, are billed for this program

23andMe® logo

In addition to genetic tests ordered by your doctor, direct‑to‑consumer genetic services, like 23andMe, are available for purchase to help you learn more about how genetics may influence your risk for certain hereditary conditions.

Alnylam has teamed up with 23andMe to offer the Hereditary Amyloidosis (TTR-Related) Genetic Health Risk report, a consumer genetic service that looks for the 3 most common genetic mutations associated with hATTR amyloidosis. This report does not identify all TTR variants that can cause hATTR amyloidosis, nor does it diagnose hATTR amyloidosis or any other health conditions. Please talk to your doctor if this condition runs in your family, you think you might have this condition, or you have concerns about your results.

If you have a TTR variant detected by the 23andMe test, the Alnylam +myFamily program will provide 23andMe Health + Ancestry Service Kits to your first-degree family members (parents, full siblings, and biological adult children)—at no charge.a

a23andMe services provide information on a person's risk for certain diseases, but cannot provide a diagnosis. The Hereditary Amyloidosis (TTR-Related) Genetic Health Risk report provides information on the 3 most common TTR mutations in the United States. There are over 120 mutations associated with hATTR amyloidosis. If you have symptoms of hATTR amyloidosis or other symptoms you are concerned about, regardless of results reported by a 23andMe Health Risk report, it is important to talk to your doctor as soon as possible. Only a doctor can confirm a diagnosis of hATTR amyloidosis.

Learn more about 23andMe »

Know that treatment options are available

If you are diagnosed with hATTR amyloidosis, treatments are available that address the underlying cause of the disease. These therapies can help by decreasing the amount of TTR protein that’s made in the body. There are also treatments that bind to TTR proteins and help prevent them from forming deposits.

Liver and/or heart transplant are also options for some patients who meet certain eligibility criteria.

Doctors may prescribe medication to help manage some of the symptoms that may reduce the daily impact on patients. Since the symptoms of hATTR amyloidosis can worsen over time, managing symptoms is an ongoing process. Additional therapies for hATTR amyloidosis are currently being researched. Talk to your doctor about what hATTR amyloidosis treatments are available and which may be right for you.

Find out more about a treatment option »