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Neurology · Amyotrophic Lateral Sclerosis Type 24

Amyotrophic Lateral Sclerosis Type 24 (ALS24 / NEK1-Associated): A Patient Guide

At a Glance

ALS24 is ALS associated with a NEK1 variant. NEK1 may raise susceptibility without guaranteeing disease, and the variant alone does not diagnose ALS. A neurologist makes the clinical diagnosis; standard team-based care supports breathing, nutrition, and symptoms while targeted therapies remain under study.

Amyotrophic Lateral Sclerosis Type 24 (ALS24) is a term used when ALS is associated with a specific disease-associated variant in the NEK1 gene. While receiving a genetic label can feel like a daunting addition to an already difficult diagnosis, understanding the nature of NEK1 helps clarify your personal health picture. This gene provides the instructions for a protein that acts as a cellular guardian. Laboratory research suggests it helps motor neurons repair their DNA and maintain the internal “highways”—known as microtubules—that transport essential nutrients throughout the cell [1][2]. When this protein does not function optimally, laboratory models indicate the motor neurons can become more vulnerable to stress and degeneration [3].

It is vital to understand that a genetic finding alone does not diagnose ALS; ALS remains a clinical diagnosis made by a neurologist. Furthermore, NEK1 is generally classified as a susceptibility gene. Unlike some other genetic variants that carry a very high risk of disease, having a NEK1 variant increases your risk but does not guarantee the disease will develop—a concept known as incomplete penetrance [4]. Scientists hypothesize that for someone with this variant to develop ALS, other genetic, environmental, or age-related factors may contribute, though these mechanisms remain under study and are not yet fully understood [5]. For many people, the discovery of a NEK1 variant is just one piece of a complex puzzle, which explains why some family members may carry the same gene variant for a lifetime without ever showing symptoms [6][7].

In your day-to-day life and medical care, NEK1-associated ALS behaves very much like other forms of ALS. The symptoms, the rate of progression, and the way the disease affects the body generally mirror what is seen in people without a known genetic cause [8]. Because of this, the roadmap for your care remains the recommended standard used for all ALS patients: a robust, multidisciplinary approach. This means working with a team of experts—including neurologists, respiratory therapists, speech-language pathologists, and nutritionists—who focus on protecting your breathing, maintaining your nutrition, and managing symptoms to ensure the highest possible quality of life [9][10].

The treatment strategy centers on proactive support and the use of evidence-based medications to manage symptoms and potentially slow the progression of the disease. While gene-targeted therapies for NEK1 are still in the preclinical and research phases, the global scientific community is focused on the very pathways this gene affects, such as DNA repair and cellular stability [2]. By engaging with a specialized clinic and staying informed about these developments, you are ensuring that your care is grounded in the best available science. You are not defined by a gene variant; you are a person at the center of a dedicated care team working to help you navigate this journey with dignity and support [11].

Common questions in this guide

Does a NEK1 variant confirm that I have ALS?
No. A NEK1 variant can increase susceptibility, but it does not by itself diagnose ALS or prove that it caused your symptoms. A neurologist makes the diagnosis using your clinical findings and medical evaluation.
What does ALS24 mean for my risk of disease?
ALS24 refers to ALS associated with a disease-associated NEK1 variant. NEK1 is generally a susceptibility gene, so the variant can raise risk without guaranteeing disease; other genetic, environmental, or age-related factors may also contribute.
Will NEK1-associated ALS progress differently from other ALS?
In general, NEK1-associated ALS has symptoms, progression, and effects on the body similar to ALS without a known genetic cause. Your neurologist can follow your individual course and adjust care to your needs.
Does finding a NEK1 variant change my treatment?
Care generally follows the same multidisciplinary approach used for ALS overall. Evidence-based medicines and support for breathing, nutrition, communication, and other symptoms are central, while NEK1-targeted therapies remain in preclinical or research stages.
Can relatives carry the same NEK1 variant without developing ALS?
Yes. Because the variant has incomplete penetrance, some relatives may carry it and never develop symptoms. A genetic counselor can help your family understand what the result may mean and whether genetic testing is appropriate.
What research is being done for NEK1-associated ALS?
Research is examining pathways linked to NEK1, including DNA repair and microtubules, which help transport materials inside motor neurons. Gene-targeted treatments are still in preclinical or research phases, so ask a specialized ALS clinic about relevant studies or trials.

Questions For You

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Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Based on my genetic report, how certain are we that this NEK1 variant is the primary driver of my symptoms?
  2. 2.Are there other members of my care team—like a genetic counselor—who can help me explain the concept of 'risk' versus 'certainty' to my family?
  3. 3.Does my treatment plan differ in any way because we have identified this specific genetic marker?
  4. 4.How can we monitor my respiratory and nutritional health proactively to stay ahead of any changes?
  5. 5.What research or clinical trials are currently focusing on the DNA repair or microtubule pathways associated with NEK1?

References

References (11)
  1. 1

    A rare missense variant impacting NEK1 kinase function is associated with ALS.

    Brenner D, Ponomarenko A, Petrut I, et al.

    Acta neuropathologica communications 2026; (14(1)).

    PMID: 42351313
  2. 2

    Loss of function of the ALS-associated NEK1 kinase disrupts microtubule homeostasis and nuclear import.

    Mann JR, McKenna ED, Mawrie D, et al.

    Science advances 2023; (9(33)):eadi5548 doi:10.1126/sciadv.adi5548.

    PMID: 37585529
  3. 3

    NEK1 loss-of-function mutation induces DNA damage accumulation in ALS patient-derived motoneurons.

    Higelin J, Catanese A, Semelink-Sedlacek LL, et al.

    Stem cell research 2018; (30()):150-162 doi:10.1016/j.scr.2018.06.005.

    PMID: 29929116
  4. 4

    Current knowledge and recent insights into the genetic basis of amyotrophic lateral sclerosis.

    Volk AE, Weishaupt JH, Andersen PM, et al.

    Medizinische Genetik : Mitteilungsblatt des Berufsverbandes Medizinische Genetik e.V 2018; (30(2)):252-258 doi:10.1007/s11825-018-0185-3.

    PMID: 30220791
  5. 5

    Exploring NEK1 genetic variability in Italian amyotrophic lateral sclerosis patients.

    Pensato V, Peverelli S, Tiloca C, et al.

    Journal of neurology 2025; (272(7)):469 doi:10.1007/s00415-025-13153-6.

    PMID: 40536530
  6. 6

    NEK1 genetic variability in a Belgian cohort of ALS and ALS-FTD patients.

    Nguyen HP, Van Mossevelde S, Dillen L, et al.

    Neurobiology of aging 2018; (61()):255.e1-255.e7 doi:10.1016/j.neurobiolaging.2017.08.021.

    PMID: 28935222
  7. 7

    Hand-onset weakness is a common feature of ALS patients with a NEK1 loss-of-function variant.

    Tsai YS, Lin KP, Jih KY, et al.

    Annals of clinical and translational neurology 2020; (7(6)):965-971 doi:10.1002/acn3.51064.

    PMID: 32462798
  8. 8

    ALS-associated C21ORF2 variant disrupts DNA damage repair, mitochondrial metabolism, neuronal excitability and NEK1 levels in human motor neurons.

    Zelina P, de Ruiter AA, Kolsteeg C, et al.

    Acta neuropathologica communications 2024; (12(1)):144 doi:10.1186/s40478-024-01852-6.

    PMID: 39227882
  9. 9

    Pathogenesis of amyotrophic lateral sclerosis.

    Morgan S, Orrell RW

    British medical bulletin 2016; (119(1)):87-98 doi:10.1093/bmb/ldw026.

    PMID: 27450455
  10. 10

    Oropharyngeal Dysphagia as the Main Expression of Amyotrophic Lateral Sclerosis.

    Rugaitienė M, Damulevičienė G, Lesauskaitė V, Ulozienė I

    Medicina (Kaunas, Lithuania) 2022; (58(5)) doi:10.3390/medicina58050647.

    PMID: 35630064
  11. 11

    Amyotrophic Lateral Sclerosis and Other Motor Neuron Diseases.

    Quinn C, Elman L

    Continuum (Minneapolis, Minn.) 2020; (26(5)):1323-1347 doi:10.1212/CON.0000000000000911.

    PMID: 33003004

This page explains ALS24 and NEK1-associated ALS for informational purposes only and does not constitute medical advice. Discuss genetic results, treatment decisions, and research options with your neurologist and genetic counselor.