Traits

Traits linked to MNS1

meiosis specific nuclear structural 1

The Human Phenotype Ontology links 5 traits to MNS1, by body system: features seen in people with one of the gene's rare conditions.

Abnormality of the cardiovascular system

Trait	How often it is seen
All organs on wrong side of body	Often (30–79%)
Heart tip and four chambers point towards right side of body	Often (30–79%)
Absent spleen	Sometimes (5–29%)

Abnormality of the ear

Trait	How often it is seen
Recurrent middle ear infection	Sometimes (5–29%)

Abnormality of the genitourinary system

Trait	How often it is seen
Male infertility	Always

How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.

Where this comes from

The Human Phenotype Ontology, release 2026-09-01: the traits linked to MNS1 and how often each is seen. Find out more at hpo.jax.org.

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