growth and developmental delay-hypotonia-vision impairment-lactic acidosis syndrome
Findings
No curated finding names growth and developmental delay-hypotonia-vision impairment-lactic acidosis syndrome yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Any combined oxidative phosphorylation deficiency in which the cause of the disease is a mutation in the SFXN4 gene.
Definition from the Mondo Disease Ontology (MONDO:0014261), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal recessive inheritance
- Onset and course
- Congenital onset
HPO, annotations 2026-09-02
Features
18 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Decreased activity of mitochondrial complex IHPOHP:0011923
- 2 of 2 reported patients
- Delayed speech and language developmentHPOHP:0000750
- 2 of 2 reported patients
- HypotoniaHPOHP:0001252
- 2 of 2 reported patients
- Increased circulating lactate concentrationHPOHP:0002151
- 2 of 2 reported patients
- Intrauterine growth retardationHPOHP:0001511
- 2 of 2 reported patients
- Lactic acidosisHPOHP:0003128
- 2 of 2 reported patients
- Visual impairmentHPO
Show the remaining 6
- Macrocytic anemiaHPOHP:0001972
- 1 of 2 reported patients
- Methylmalonic aciduriaHPOHP:0012120
- 1 of 2 reported patients
- Mild intellectual disabilityHPOHP:0001256
- 1 of 2 reported patients
- OligohydramniosHPOHP:0001562
- 1 of 2 reported patients
- Skeletal muscle atrophyHPOHP:0003202
- 1 of 2 reported patients
- TremorHPOHP:0001337
- 1 of 2 reported patients
Genes
1 gene
Germline variants in the gene encoding each protein, as classified by GenCC submitters, each in their own words. Limited, disputed and refuted submissions are listed too.
- SFXN4HGNC:16088
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal recessive · 2020
- Strong · PanelApp Australia · Autosomal recessive · 2025
- Moderate · Ambry Genetics · Autosomal recessive · 2018
- Supportive · Orphanet · Autosomal recessive · 2021
Where it sits
Other names
3 names
Resolves to: growth and developmental delay-hypotonia-vision impairment-lactic acidosis syndrome
- Also called
- combined oxidative phosphorylation deficiency caused by mutation in SFXN4combined oxidative phosphorylation deficiency type 18SFXN4 combined oxidative phosphorylation deficiency