Evidence map›Paper›PMID 21315377›Full record

ReviewJournal of the neurological sciences2011

Friedreich's ataxia: pathology, pathogenesis, and molecular genetics.

Arnulf H Koeppen

6 registry-linked trialsAbstract readHistorical ArticleReview
In one paragraph

Review in Journal of the neurological sciences, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 6 registered trials, which are not on this map. Cited by 236 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
236citing papers in PubMed, 2 pooled it
14.5field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT04176991 phase1completednot on this mapstarted 2019, after this paper: background citation

A Phase 1 Single Ascending Dose Study to Assess the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Subcutaneous CTI-1601 Versus Placebo in Subjects With Friedreich's Ataxia

TypeinterventionalSponsorLarimar Therapeutics, Inc.Ran2019 to 2020Enrolled28ConditionsFriedreich AtaxiaArmsCTI-1601, Placebo
NCT04519567 phase1completednot on this mapstarted 2020, after this paper: background citation

A Phase 1 Multiple Ascending Dose Study to Assess the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Subcutaneous CTI-1601 Versus Placebo in Subjects With Friedreich's Ataxia

TypeinterventionalSponsorLarimar Therapeutics, Inc.Ran2020 to 2021Enrolled27ConditionsFriedreich AtaxiaArmsCTI-1601, Placebo
NCT05579691 phase2completednot on this mapstarted 2022, after this paper: background citation

A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Dose Exploration Study to Assess the Safety, Pharmacokinetics, and Pharmacodynamics of Subcutaneous CTI-1601 in Adult Subjects With Friedreich's Ataxia

TypeinterventionalSponsorLarimar Therapeutics, Inc.Ran2022 to 2023Enrolled28ConditionsFriedreich AtaxiaArmsCTI-1601, Placebo
NCT06447025 phase2recruitingnot on this mapstarted 2024, after this paper: background citation

An Open-Label Extension Study to Assess the Long-Term Safety, Efficacy, Pharmacodynamics, Pharmacokinetics, and Tolerability of Subcutaneous CTI-1601 in Subjects With Friedreich's Ataxia

TypeinterventionalSponsorLarimar Therapeutics, Inc.Ran2024 to 2027Enrolled85ConditionsFriedreich AtaxiaArmsCTI-1601
NCT06681766 phase1terminatednot on this mapstarted 2024, after this paper: background citation

A Phase 1 Study to Assess the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Subcutaneous Nomlabofusp in Adolescents and Children With Friedreich's Ataxia

TypeinterventionalSponsorLarimar Therapeutics, Inc.Ran2024 to 2025Enrolled18ConditionsFriedreich AtaxiaArmsNomlabofusp, Placebo
NCT07778836 phase3recruitingnot on this mapstarted 2026, after this paper: background citation

A Phase 3 Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate the Efficacy and Safety of Subcutaneous Nomlabofusp in Subjects With Friedreich's Ataxia

TypeinterventionalSponsorLarimar Therapeutics, Inc.Ran2026 to 2029Enrolled150ConditionsFriedreich Ataxia, Friedreich's AtaxiaArmsNomlabofusp, Placebo
3 · Its place in the literature

Who cites it

236 citing papers in PubMed, 2 syntheses or guidelines pooled it, 439 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. GIFT-1, a phase IIa clinical trial to test the safety and efficacy of IFNγ administration in FRDA patients.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2016
    Trial
  7. Article
  8. Article
  9. A second-generation "hypoxia in a pill" rescues neurodegenerative phenotypes across distinct mouse models.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Multimodal Imaging Investigation of the Dentato-Thalamo-Cortical Pathway in Friedreich's Ataxia.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  19. Article
  20. Article

176 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Arnulf H KoeppenVA Medical Center, 113 Holland Ave, and Albany Medical College, 47 New Scotland Ave, Albany, NY 12208, USA. arnulf.koeppen@med.va.gov
Albany Medical Center Hospital · US

Funding

Iron in the pathogenesis of Friedreich's ataxiaR01NS069454 · NINDS · ALBANY RESEARCH INSTITUTE, INC. · PI KOEPPEN, ARNULF HANS-WERNER · 2010 to 2014
$1.3M
NINDS NIH HHS R01 NS069454NINDS NIH HHS R01-NS069454-01A1
6 · The paper itself

Abstract

The pathogenic mutation in Friedreich's ataxia (FRDA) is a homozygous guanine-adenine-adenine (GAA) trinucleotide repeat expansion on chromosome 9q13 that causes a transcriptional defect of the frataxin gene. Deficiency of frataxin, a small mitochondrial protein, is responsible for all clinical and morphological manifestations of FRDA. This autosomal recessive disease affects central and peripheral nervous systems, heart, skeleton, and endocrine pancreas. Long expansions lead to early onset, severe clinical illness, and death in young adult life. Patients with short expansions have a later onset and a more benign course. Some are not diagnosed during life. The neurological phenotype reflects lesions in dorsal root ganglia (DRG), sensory peripheral nerves, corticospinal tracts, and dentate nuclei (DN). Most patients succumb to cardiomyopathy, and many become diabetic during the course of their disease. This review seeks to reconcile the diverse clinical features with pathological and molecular data. In the pathogenesis of the lesion in DRG, dorsal spinal roots, and sensory peripheral nerves, developmental defects and atrophy occur in combination. The progressive lesion of the DN lacks a known developmental component. Destruction of the DN, optic atrophy, and degeneration of the corticospinal tracts are intrinsic central nervous system lesions. Fiber loss in dorsal columns and spinocerebellar tracts, and atrophy of the neurons in the dorsal nuclei of Clarke are secondary to the lesion in DRG. The role of frataxin deficiency in the pathogenesis of FRDA is still unclear because the protein has multiple functions in the normal state, including biogenesis of iron-sulfur clusters; iron chaperoning; iron storage; and control of iron-mediated oxidative tissue damage.

Indexed as

AdolescentAdultAgedAge of OnsetAnimalsChildChild, PreschoolDisease Models, AnimalFemaleFrataxinFriedreich AtaxiaHistory, 19th CenturyHistory, 20th CenturyHistory, 21st CenturyHumansInfantFrataxinIron-Binding Proteins

Identifiers

PMID21315377
PMCPMC3062632
OpenAlexW1985093325

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.