Related Experiment Video
Updated: May 16, 2026

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
Published on: August 15, 2019
RAB3GAP1, RAB3GAP2 and RAB18: disease genes in Micro and Martsolf syndromes
Mark T Handley1, Irene A Aligianis
1MRC Human Genetics Unit, MRC IGMM, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, Scotland, UK.
Abstract:
Micro syndrome (OMIM 60018) and Martsolf syndrome (OMIM 21270) are related rare autosomal recessive disorders characterized by ocular and neurological abnormalities and hypothalamic hypogonadism. Micro syndrome has been associated with causative mutations in three disease genes: RAB3GAP1, RAB3GAP2 and RAB18. Martsolf syndrome has been associated with a mutation in RAB3GAP2. The present review summarizes the current literature on these genes and the proteins they encode.
Insights
Micro syndrome and Martsolf syndrome are rare genetic disorders affecting the eyes, brain, and hormone production. Mutations in RAB3GAP1, RAB3GAP2, and RAB18 genes are linked to these conditions.
Area of Science:
- Genetics
- Rare diseases
- Endocrinology
Background:
- Micro syndrome and Martsolf syndrome are rare autosomal recessive disorders.
- Both conditions present with ocular, neurological, and hypothalamic hypogonadism abnormalities.
Purpose of the Study:
- To review the current literature on genes associated with Micro syndrome and Martsolf syndrome.
- To summarize information on RAB3GAP1, RAB3GAP2, and RAB18 genes and their encoded proteins.
Main Methods:
- Literature review of scientific articles.
- Analysis of genetic mutations and associated phenotypes.
Main Results:
- Micro syndrome is associated with mutations in RAB3GAP1, RAB3GAP2, and RAB18.
- Martsolf syndrome is linked to mutations in RAB3GAP2.
- RAB3GAP2 mutations are implicated in both syndromes.
Conclusions:
- The RAB3 gene family plays a crucial role in the pathogenesis of Micro and Martsolf syndromes.
- Further research into these genes and proteins may elucidate disease mechanisms and therapeutic targets.
More Related Videos
08:22A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations
Published on: December 1, 2017
09:58An Efficient Protocol to Assess ERK Activity Modulation in Early Zebrafish Noonan Syndrome Models via Live FRET Microscopy and Immunofluorescence
Published on: May 2, 2025
Related Concept Videos
Rab Proteins
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
Rab Cascades
The Ras Gene
Ras is a superfamily...
Small GTPases - Ras and Rho
Three regulatory proteins control their activity:
Microtubule Associated Proteins (MAPs)
Incomplete Dominance