Meyahealth
HomeGeneticsGeneHSPB1 gene
Back to Gene
HSPB1 gene
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Gene

HSPB1 gene

The HSPB1 gene produces a heat shock protein that protects cells from stress and plays a crucial role in maintaining the structure and function of neurons.

Normal Function

The HSPB1 gene provides instructions for making heat shock protein beta-1. This protein is part of a family that protects cells under stress from factors such as infection, inflammation, toxins, injury, and disease. These proteins block signals that lead to cell self-destruction (apoptosis), assist in cell movement, stabilize the cytoskeleton, and help fold or repair proteins.

In nerve cells (neurons), heat shock protein beta-1 organizes neurofilaments, which are molecular threads that maintain the structure of the axon. This organization is essential for the efficient transmission of nerve impulses.

Health Conditions Related to Genetic Changes

Distal hereditary motor neuropathy, type II

Variants in the HSPB1 gene are the most common cause of distal hereditary motor neuropathy, type II. This condition involves damage to motor neurons in the brain and spinal cord, leading to progressive weakness and muscle tissue loss (atrophy) in the feet and legs.

  • The gene variants typically cause changes in the amino acids of heat shock protein beta-1.
  • The altered protein is more likely to form clusters, or aggregates, which can impair cell function.
  • Neurons lacking a functional version of this protein are more vulnerable to stress and damage, leading to cell death.

Charcot-Marie-Tooth disease

Variants in the HSPB1 gene are also associated with certain forms of Charcot-Marie-Tooth disease, a group of disorders that affect the peripheral nerves.

Other Names for This Gene

  • heat shock protein beta-1
  • HSPB1_HUMAN
  • SRP27
  • stress-responsive protein 27

Frequently Asked Questions

There is no cure that reverses the genetic defect, but management focuses on symptom relief and preventing complications. Physical therapy and occupational therapy help maintain mobility. Pain can be managed with neuropathic pain medications such as gabapentin or duloxetine. In some cases, low-dose steroids or immunomodulatory drugs are trialed, though evidence is limited. Regular monitoring for respiratory muscle weakness is also advised.
While no intervention can halt the genetic process, maintaining a balanced diet rich in antioxidants, staying physically active within tolerance, and avoiding neurotoxic exposures (e.g., certain medications or heavy metals) may help preserve nerve health. Some patients report benefit from vitamin B12 or coenzyme Q10, but these should be discussed with a clinician before use.
Patients with HSPB1 mutations often notice gradual weakness or numbness in the feet and calves that progresses to the legs. A sudden drop in muscle strength, difficulty walking, or unexplained muscle cramps can also be early warning signs. If these symptoms appear, especially in a family with a history of neuropathy, a neurologist should be consulted for evaluation.
Confirmation typically starts with a detailed family and medical history followed by nerve conduction studies to assess motor nerve function. If findings suggest a hereditary motor neuropathy, a genetic counselor will order a targeted gene panel or whole-exome sequencing that includes HSPB1. A positive result is confirmed by Sanger sequencing of the specific variant.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

Meyahealth

Ⓒ 2026. All rights reserved by MEYA

About UsTerms & PolicyFAQ