ichthyosis histrix, Lambert type

Summary

ichthyosis histrix, Lambert type (MONDO:0007809) is a disease with 1 cohort gene.

At a glance

• Cohort genes: 1
• ClinVar variants: 6

Clinical features

No curated clinical features (Orphanet) for this disease.

Identifiers

Disease identifiers

Field	Value
Canonical name	ichthyosis histrix, Lambert type
Mondo ID	MONDO:0007809
MeSH	C536087
OMIM	146600
Orphanet	79504
SNOMED CT	254174005
UMLS	C0432311
MedGen	98487
GARD	0009497
Is cancer (heuristic)	no

Also known as: ichthyosis hystrix gravior · ichthyosis, Lambert type · Lambert type ichthyosis

Data availability: 6 ClinVar variants.

Disease family

Classification path: disease › human disease › disease by body system or component › integumentary system disorder › skin disorder › epidermal disease › ichthyosis › inherited ichthyosis › ichthyosis hystrix › ichthyosis histrix, Lambert type

Related subtypes (1): ichthyosis hystrix of Curth-Macklin

Genetics & variants

GWAS landscape

No GWAS associations recorded — common-variant (GWAS) studies don’t cover this disease (typical for Mendelian / rare diseases). See the curated gene cohort and Mendelian overlap below.

Variant details and genetic-evidence tiers

ClinVar germline variants

6 retrieved; paginated sample, class counts are floors:

3 uncertain significance, 1 likely benign, 1 pathogenic, 1 conflicting classifications of pathogenicity

ClinVar	Variant (HGVS)	Gene	Classification	Review
3255316	NM_000421.5(KRT10):c.1304T>C (p.Leu435Pro)	KRT10	Pathogenic	no assertion criteria provided
808260	NM_000421.5(KRT10):c.1639_1653dup (p.543GGGSS[3])	KRT10	Conflicting classifications of pathogenicity	criteria provided, conflicting classifications
3891517	NM_000421.5(KRT10):c.1676G>T (p.Gly559Val)	KRT10	Uncertain significance	criteria provided, single submitter
3891518	NM_000421.5(KRT10):c.1650_1667dup (p.Gly556_Tyr557insSerSerSerGlyGlyGly)	KRT10	Uncertain significance	criteria provided, single submitter
3891519	NM_000421.5(KRT10):c.1460_1461insGTTC (p.His487fs)	KRT10	Uncertain significance	criteria provided, single submitter
2500052	NM_000421.5(KRT10):c.1749-10A>G	KRT10	Likely benign	criteria provided, single submitter

Genes & proteins

Mendelian disease overlap and somatic drivers

GenCC: 0 · Orphanet: 4 · OMIM-shared: 0 · Dual-evidence (GWAS+Mendelian): 0

Orphanet rare-disease linkage (cohort genes)

Gene	Orphanet ID	Rare disease
KRT10	Orphanet:281139	Annular epidermolytic ichthyosis
KRT10	Orphanet:281190	Congenital reticular ichthyosiform erythroderma
KRT10	Orphanet:312	Autosomal dominant epidermolytic ichthyosis
KRT10	Orphanet:512103	Autosomal recessive epidermolytic ichthyosis

Cohort genes → proteins

1 cohort genes, 1 distinct canonical proteins.

Evidence partition

Subset	Genes
multi_evidence	1

Cohort genes (full)

Symbol	HGNC	Ensembl	UniProt	Name	Evidence
KRT10	HGNC:6413	ENSG00000186395	P13645	Keratin, type I cytoskeletal 10	clinvar

Cohort function summary

Lead sentence per gene, UniProt-curated.

Symbol	Protein name	Function (lead sentence)
KRT10	Keratin, type I cytoskeletal 10	Plays a role in the establishment of the epidermal barrier on plantar skin.

Protein-family classification

Druggable: 0 · Difficult: 0 · Unknown: 1 · Druggable fraction: 0.0

Family distribution

Cohort families vs a genome-wide background (hypergeometric, BH-FDR; fold = observed/expected). Counts kept; sorted by enrichment, so the catch-all Other/Unknown bucket no longer leads.

Family	Genes	Fold	FDR
Other/Unknown	1	1.8×	0.558

Per-gene assignment

Symbol	Family	Druggable?	EC	InterPro (top 3)
KRT10	Other/Unknown	no		Keratin_I, IF_conserved, IF_rod_dom

Expression context

Cohort genes with no expression data: 0.

1 cohort gene are a single-cell marker in ≥1 SCXA experiment.

Breadth distribution (Bgee present_calls)

Bucket	Genes
narrow (1-5 tissues)	0
moderate (6-20)	0
broad (>20)	1
unknown	0

Top tissues across cohort

Tissue	Cohort genes
mammalian vulva	1
penis	1
upper leg skin	1

Per-gene tissue summary (top 30)

Symbol	Bgee breadth	FANTOM5 breadth	SCXA	Top tissues
KRT10	299	broad	marker	upper leg skin, penis, mammalian vulva

Protein interactions among cohort

Intra-cohort edges: 0.

Hub genes (top 10 by interactor count)

Symbol	Interactor count
KRT10	2,304

Structural data

PDB: 1 · AlphaFold-only: 0 · No structure: 0

Cohort genes with PDB structures (top 30)

Symbol	UniProt	PDB entries
KRT10	P13645	6

Function

Pathway analysis

Distinct Reactome pathways touched by cohort: 5. Enrichment computed across 1 evidence-associated genes (1 with Reactome annotation).

Pathways by enrichment

Over-representation of cohort genes vs the genome-wide background (hypergeometric test, Benjamini-Hochberg FDR; fold = observed/expected over 1 annotated cohort genes). Counts and members are kept as ground-truth; sorted by enrichment.

Pathway	Cohort genes	Fold	FDR	Sample cohort genes
Differentiation of Keratinocytes in Interfollicular Epidermis in Mammalian Skin	1	278.5×	0.011	KRT10
Developmental Cell Lineages	1	223.9×	0.011	KRT10
Formation of the cornified envelope	1	87.8×	0.019	KRT10
Keratinization	1	55.7×	0.022	KRT10
Developmental Biology	1	14.5×	0.069	KRT10

GO biological processes by enrichment

Over-representation of cohort genes vs the genome-wide background (hypergeometric test, Benjamini-Hochberg FDR; fold = observed/expected over 1 annotated cohort genes). Counts and members are kept as ground-truth; sorted by enrichment.

GO term	Cohort genes	Fold	FDR	Sample cohort genes
positive regulation of epidermis development	1	3370.4×	0.002	KRT10
protein heterotetramerization	1	1053.2×	0.002	KRT10
cornification	1	1053.2×	0.002	KRT10
morphogenesis of an epithelium	1	343.9×	0.004	KRT10
keratinocyte differentiation	1	247.8×	0.004	KRT10
intermediate filament organization	1	240.7×	0.004	KRT10

Therapeutics

Drug target analysis

Approved (phase 4): 0 · Phase ≥3: 0 · Phased (≥1): 0 · Undrugged: 1

Druggability breadth: 0 of 1 evidence-associated genes (0%) have a ChEMBL target (buckets above are over the deeply-mined display cohort).

Top cohort targets by molecule count

Symbol	Molecules	Max phase
KRT10	0	0

Bioactivity and enzyme data

Enzyme cohort genes (≥1 EC): 0.

Pharmacogenomics

Cohort genes with a PharmGKB record: 1; with CPIC/DPWG dosing guidelines: 0.

No cohort gene has a CPIC/DPWG genotype-guided dosing guideline (PharmGKB).

Chemical tractability of cohort targets

0 approved/phased compounds have measured bioactivity against a cohort gene (and aren’t yet in disease-level trials). This is a research / tractability signal, NOT a therapeutic recommendation — a bioactivity row often reflects off-target or screening binding (e.g. promiscuous kinase inhibitors against a cohort kinase), implying no disease mechanism.

Druggability pyramid

Cohort genes binned by druggability tier (high → low):

Tier	Definition	Genes	Symbols
A	Approved (phase 4 drug)	0
B	Phased (≥1) drug, not yet approved	0
C	Druggable family + PDB, no drug	0
D	Druggable family + AlphaFold only, no drug	0
E	Difficult family or no structure, no drug	1	KRT10

Undrugged target profiles

1 cohort genes are undrugged. Ranked by ‘starting-point quality’ (assay depth + drugged-partner adjacency).

Symbol	ChEMBL assays	Drugged partners (top 3)
KRT10	0	—

Clinical trials & evidence

Clinical trials

Clinical trials: 0.