About WHIM Syndrome


“Genetic testing answered so many questions for me…now my doctors know what kind of medication will help me and what won’t.” – Kirsty

WHIM Syndrome Overview


What is WHIM syndrome?

WHIM syndrome is a rare and difficult-to-diagnose primary immunodeficiency in which the body’s immune system does not function properly and has trouble fighting infections, especially respiratory, ear, and skin infections.

Some doctors also call primary immunodeficiencies inborn errors of immunity, which are genetic mutations that cause immunodeficiencies. WHIM syndrome is predominantly caused by mutations in the CXCR4 gene which causes white blood cells to get trapped in the bone marrow.

WHIM syndrome was named after four symptoms: Warts, Hypogammaglobulinemia, Infections, Myelokathexis. Not all people with WHIM syndrome have all four symptoms, which can make diagnosis difficult, and symptoms may impact different parts of the body.

WHIM Syndrome Educational Resources


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WHIM Syndrome Patient Experience

What to Look For

Patient Educational Guide

Diagnosis and Treatment


Why is it important to get diagnosed?

A diagnosis of WHIM syndrome may be confirmed with a genetic test. There are several reasons why a confirmed diagnosis of WHIM syndrome may be helpful:

Confirm a Diagnosis

If you believe you may have WHIM syndrome, genetic testing may provide answers to questions you may have about your diagnosis, treatment, and the potential impact to your family. A genetic test may help confirm the diagnosis of WHIM syndrome and may show a variant or mutation in the CXCR4 gene.

Improve Outcomes

Researchers have found that the earlier WHIM syndrome is diagnosed, the better the outcomes for people living with it. Healthcare professionals may be able to recommend a better treatment regimen.

Family Planning

Genetic testing can be a helpful part of family planning, whether you are starting or growing your family. Carrier, or reproductive, testing looks at the genetic variants or mutations of the biological mother and father to help people make choices with their doctors before getting pregnant.

How can I get a genetic test?

Some programs offer free genetic testing to help diagnose rare diseases like WHIM syndrome:

  • Probably Genetic offers a program for eligible patients or family members with immune deficiencies, including WHIM syndrome, to directly order genetic testing at no cost.
  • PATH4WARD is a no-charge genetic testing program sponsored by X4 in partnership with Invitae, intended to help diagnose qualified U.S. patients suspected of having a chronic neutropenic disorder or a primary immunodeficiency (PID), including WHIM syndrome.

Genetic counseling and family testing are also available through both programs.

Resources for Healthcare Professionals

For U.S. Healthcare Professionals only

Visit What If It’s WHIM? to learn more