Open research questions in Genetic Neurodegenerative Diseases
107 unresolved questions extracted from the limitations and future-work sections of 261 Genetic Neurodegenerative Diseases papers in our library. Each links back to the study that raised it.
What the literature leaves open
The lack of understanding of the cellular and molecular mechanisms underlying FRDA-associated cardiac dysfunction. The absence of approved therapies specifically targeting FRDA-associated cardiomyopathy.
Frataxin deficiency drives cardiac dysfunction and transcriptional dysregulation in Friedreich ataxia iPSC model · 2026 · DOIsmall sample size, - limited to HD mutation carriers and healthy controls, - no examination of other cognitive domains, - limited longitudinal follow-up period of 1 year
Visuospatial working memory in Huntington’s disease: behavioural and structural brain correlates · 2026 · DOIinvestigate the neural mechanisms underlying VSWM deficits in HD, - examine the relationship between VSWM performance and daily functioning in HD, - develop targeted interventions to improve VSWM in HD
Visuospatial working memory in Huntington’s disease: behavioural and structural brain correlates · 2026 · DOIPain is a prevalent and disabling symptom of myotonic dystrophy type 1 (DM1), yet its underlying mechanisms remain poorly understood.
A mouse model of myotonic dystrophy type 1 exhibits pain-like behavior and peripheral nociceptor hyperexcitability · 2026 · DOIPreclinical studies suggest myotonia may reverse quickly with targeted treatment and video hand opening time (vHOT) could be a straightforward method for assessing myotonia in multicenter trials, but few studies have evaluated vHOT in large DM1 cohorts.
Prospective Study of Video Hand Opening Time as a Quantitative Measurement of Myotonia in Patients With Myotonic Dystrophy Type 1 · 2026 · DOIBackground/Objectives: Friedreich’s ataxia in considered the most common form of autosomal recessive ataxia; however, it’s prevalence in the Russian Federation remains poorly studied.
Long-Term Experience in the Molecular Genetic Diagnosis of Friedreich Ataxia in the Russian Federation · 2026 · DOIBACKGROUND AND OBJECTIVES: Cerebellar cognitive-affective syndrome (CCAS) results from cerebellar degeneration, but its prevalence in spinocerebellar ataxias (SCAs) remains underexplored.
Prevalence, Severity, and Progression of Cerebellar Cognitive-Affective Syndrome in Patients With Spinocerebellar Ataxias · 2025 · DOICompared with the external placebo group, triheptanoin was associated with motor stability and decreased caudate atrophy in patients treated for 12 months, but the post hoc nature of these findings is a major limitation.
Effect of Triheptanoin on Caudate Atrophy and Motor Scores in Patients With Early-Stage Huntington Disease · 2024 · DOIAdditional studies confirming the cancer risk and delineating the cancer spectrum in different genetic subtypes of muscular dystrophies are warranted before considering altered cancer screening recommendations than for the general population.
Epidemiologic studies have found an increased cancer risk in myotonic dystrophy, although the cancer risk spectrum is poorly characterized.
While several studies have investigated mental health, distress and psychosocial resources in the general population during the pandemic, little is known about the experience of persons with INMD.
Psychosocial resources and psychopathology among persons with neuromuscular disorders during the COVID-19 pandemic · 2024 · DOIThe role of RBFOX1 splicing function in Huntington's disease is not well understood - There is a need for therapeutic strategies that target alternative splicing in Huntington's disease
There is a lack of attention to sex-related differences in HD research and care pathways. There is a need for further research on sex-specific differences in HD symptomatology and biomarkers.
Our scoping review has some limitations. We only searched two electronic databases – PubMed and Google Scholar. Since Google Scholar returned over 9,000 results and the first 500 screened by relevance filter covered suf- ficient relevant studies, this should be adequate for the scope of this review. Nevertheless, we cannot rule out that some studies may have been missed by not includ- ing additional databases. Another limitation arises from methodological inconsistencies in the included studies, where confounders, such as medication, comorbidities or age have not been included in the study statistics and therefore could distort results especially in the phenom- enology of the disease.
Limited knowledge is available about the relevance of non-canonical ATM functions in NSPCs, - The complex pathology of AT is not fully understood
The multifaceted role of ATM protein in neural stem/progenitor cell biology and neurogenesis: beyond DNA damage response · 2026 · DOIThe mechanisms of HD pathology are not fully understood. The role of double-strand breaks in HD is not well characterized.
Double strand breaks drive toxicity in a Huntington’s disease mouse model with or without somatic expansion · 2026 · DOIThere is a need for further studies to confirm the findings. The review highlights the limited number of studies that reported on pre-symptomatic carriers.
Quantitative Ocular Motor / Vestibular Assessment in Patients with Spinocerebellar Ataxia Type 3 (SCA3, Machado Joseph Disease) – Systematic Review of the Literature · 2026 · DOISeveral factors complicated the comparison between studies. Firstly, different measurement methods were used. Secondly, details on data retrieval were often brief or even missing. Additionally, a relatively small number of studies tested the same paradigms and limited single patient data, often impeded data synthesis.
Quantitative Ocular Motor / Vestibular Assessment in Patients with Spinocerebellar Ataxia Type 3 (SCA3, Machado Joseph Disease) – Systematic Review of the Literature · 2026 · DOIDiagnosing A-DBN can be challenging due to its rarity and similarity to other conditions. Treating A-DBN is difficult due to the lack of effective therapies.
Long-term response to aminopyridines in a cohort of patients with ataxia associated with downbeat nystagmus due to the FGF14 GAA expansion · 2026 · DOIThere is a lack of understanding of the clinical, radiological, and genetic findings in patients with A-DBN. The effectiveness of long-term aminopyridine treatment in these patients is unknown.
Long-term response to aminopyridines in a cohort of patients with ataxia associated with downbeat nystagmus due to the FGF14 GAA expansion · 2026 · DOIPolyglycine (polyG) proteins translated from expanded GGC trinucleotide repeats are implicated in a growing group of neuromuscular degenerative disorders characterized by intranuclear inclusions, yet the pathogenic importance of aggregate localization and the mechanisms underlying polyG-induced neurodegeneration remain unclear.
Intranuclear polyglycine aggregation drives neurodegeneration through epigenetic repression of chromatin accessibility and transcription · 2026 · DOIDiagnosing anti-GAD65-associated cerebellar ataxia can be challenging due to its rarity and nonspecific symptoms. Treating anti-GAD65-associated cerebellar ataxia can be challenging due to its limited response to conventional therapies.
A Case Report of Reversible Mitochondrial Bioenergetic Dysfunction in PBMCs in Anti-GAD65–Associated Cerebellar Ataxia · 2026 · DOIThe study was conducted in a clinical setting with limited biological material available for analysis. The study was a single-case observation with comparison to a single age-matched control.
A Case Report of Reversible Mitochondrial Bioenergetic Dysfunction in PBMCs in Anti-GAD65–Associated Cerebellar Ataxia · 2026 · DOIFurther studies are needed to investigate the therapeutic potential of MPC inhibition in neurodegenerative diseases. Additional research is required to understand the mechanisms underlying the effects of MPC inhibition on the integrated stress response and mutant huntingtin proteotoxicity.
Inhibition of the mitochondrial pyruvate carrier attenuates the integrated stress response activation in a cellular model of Huntington’s disease · 2026 · DOIThe effect of MPC inhibition on the integrated stress response in a cellular model of Huntington's disease is not well understood. The impact of MPC inhibition on mutant huntingtin proteotoxicity is not well characterized.
Inhibition of the mitochondrial pyruvate carrier attenuates the integrated stress response activation in a cellular model of Huntington’s disease · 2026 · DOI
Most-cited papers in Genetic Neurodegenerative Diseases
- Aggregation of Huntingtin in Neuronal Intranuclear Inclusions and Dystrophic Neurites in Brain · Science · 1997 · 2,372 citations
- Friedreich's Ataxia: Autosomal Recessive Disease Caused by an Intronic GAA Triplet Repeat Expansion · Science · 1996 · 2,318 citations
- Long somatic DNA-repeat expansion drives neurodegeneration in Huntington’s disease · Cell · 2025 · 230 citations
- Comprehensive genetic diagnosis of tandem repeat expansion disorders with programmable targeted nanopore sequencing · Science Advances · 2022 · 184 citations
- Holistic Analysis of Basal Readers: An Assessment Tool. · Reading horizons · 1994 · 181 citations
- Clinical Features of Friedreich Ataxia · Journal of Child Neurology · 2012 · 169 citations
- Recent trends in the incidence of multiple births and associated mortality. · Archives of Disease in Childhood · 1987 · 168 citations
- Cell-type-specific CAG repeat expansions and toxicity of mutant Huntingtin in human striatum and cerebellum · Nature Genetics · 2024 · 134 citations
- Current Pharmacological Approaches to Reduce Chorea in Huntington’s Disease · Drugs · 2016 · 125 citations
- Earliest functional declines in Huntington disease · Psychiatry Research · 2010 · 121 citations
Most recent work
- An Antibody–Oligonucleotide Conjugate for Myotonic Dystrophy Type 1 · New England Journal of Medicine · 2026
- Population-scale variability at short tandem repeat loci reveals pathogenicity signature · bioRxiv · 2026
- Oral splicing modulator branaplam in Huntington’s disease: a phase 2 randomized controlled trial · Nature Medicine · 2026
- Dietary and metabolic reprogramming alleviates neurodegeneration: a review of mechanisms and clinical implications · Frontiers in Nutrition · 2026
- Prospective Study of Video Hand Opening Time as a Quantitative Measurement of Myotonia in Patients With Myotonic Dystrophy Type 1 · Neurology · 2026
- Vinay Prasad leaves FDA again amid dispute over Huntington’s disease treatment · BMJ · 2026
- SynTEF1 restores the functional disease phenotype of SCA27B in an hiPSC-derived neuronal model · bioRxiv · 2026
- Pearls & Oy-sters: SCA27B as an Elusive Genetic Cause of Episodic Neurologic Symptoms in Later Adulthood · Neurology · 2026
- A family portrait of the genomic factors shaping tandem repeat mutagenesis · bioRxiv · 2026
- Reply to: Comment on “Genetic testing for adult-onset neurodegenerative diseases: A clinical perspective” by Dr. Pandey · Journal of the Formosan Medical Association · 2026
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