# Novel SKIC3 variants in tricho-hepato-enteric syndrome with hemochromatosis

**Authors:** Kayo Ochiai, Yoshinori Aoki, Naoshi Yamada, Murasaki Aman, Atsushi Yamashita, Masatoshi Yamaguchi, Daisuke Nakato, Toshiki Takenouchi, Kenjiro Kosaki, Yuki Kodama, Hiroshi Moritake

PMC · DOI: 10.1038/s41439-025-00318-y · Human Genome Variation · 2025-07-18

## TL;DR

A new case of a rare genetic disorder is reported with unique gene variants and additional iron metabolism issues.

## Contribution

Identification of novel compound heterozygous SKIC3 variants in a THES patient with neonatal hemochromatosis.

## Key findings

- Compound heterozygous SKIC3 variants c.815_816del and c.2284G>A were found in a THES patient.
- The patient also presented with neonatal hemochromatosis, suggesting a link to iron metabolism dysregulation.

## Abstract

Tricho-hepato-enteric syndrome (THES), a rare autosomal recessive disorder caused by variants in the SKIC3 or SKIC2 gene, is characterized by intractable diarrhea, woolly hair, growth restriction and liver disease. Here we report a neonatal case of THES with neonatal hemochromatosis, in which the novel compound heterozygous SKIC3 variants NM_014639.4:c.815_816del p.(Gly272AlafsTer9) and NM_014639.4:c.2284G>A p.(Gly762Arg) were identified. Further research is needed to elucidate the mechanisms underlying iron metabolism dysregulation in THES.

## Linked entities

- **Genes:** SKIC3 (SKI3 subunit of superkiller complex) [NCBI Gene 9652], SKIC2 (SKI2 subunit of superkiller complex) [NCBI Gene 6499]
- **Diseases:** Tricho-hepato-enteric syndrome (MONDO:0009105), neonatal hemochromatosis (MONDO:0009275)

## Full-text entities

- **Diseases:** neonatal hemochromatosis (MESH:C536394), growth restriction (MESH:D005317), hemochromatosis (MESH:D006432), liver disease (MESH:D008107), diarrhea (MESH:D003967), THES (MESH:D004751), autosomal recessive disorder (MESH:D030342)
- **Chemicals:** iron (MESH:D007501)
- **Mutations:** Gly762Arg, c.2284G>A

## Full text

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## Figures

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## References

1 references — full list in the complete paper: https://tomesphere.com/paper/PMC12271341/full.md

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Source: https://tomesphere.com/paper/PMC12271341