GENETIC HEALTH, WRITTEN FOR HUMANS

Your genes, explained.

Peer-reviewed profiles for every gene, chromosome and condition we test for — aligned with NHS care pathways.

  • 1011 Genes
  • 24 Chromosomes
  • 734 Conditions

New to genetics? Start here

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Genes
GENCODE Release 41
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Disorders
OMIM
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Authoritative sources
Weekly
Data refresh

Browse the library

Three ways in - by gene, by chromosome, or by condition.

1011 genes
Genes
A–Z profiles of every launch-set gene - function, variants, associated conditions, NHS panels.
Browse genes →
24 chromosomes
Chromosomes
Every human chromosome - size, gene content, notable cytogenetic bands, characteristic disorders.
Browse chromosomes →
734 conditions
Genetic Conditions
Inherited conditions grouped by clinical category - cancer, cardio, metabolic, chromosomal, and more.
Browse conditions →

Popular genes

A sample of the most-looked-up genes in the launch set.

Book a Jeen Health test

Every genetic test offered through Jeen Health, grouped by clinical use. Each card opens the booking page on jeen.health. Turnaround times are working days from when your sample reaches the laboratory.

See all tests →

Combined panels

Bundled hereditary-cancer + reproductive-carrier in one counselling pathway.

Karyotype & chromosome analysis

Cytogenetic analysis of all 46 chromosomes - used for recurrent miscarriage and unexplained infertility.

Newborn & paediatric

Targeted newborn genetic screening for early-onset, treatable conditions.

Browse by NHS panel

Genes grouped by the NHS Genomic Medicine Service test panel that covers them - the same grouping your GP or clinical geneticist uses.

METHODOLOGY

Built on the world's authoritative genetic databases.

Every page in the Jeen Library is grounded in primary data from peer-reviewed, clinician-curated sources. We don't paraphrase the genome - we cite, attribute, and link directly to the institutions that maintain it.

HGNC
HUGO Gene Nomenclature Committee

The single source of truth for human gene symbols. Every profile uses HGNC's approved symbol - never a research alias or deprecated synonym - so a search for BRCA1 always lands on the canonical record.

genenames.org
UniProt
Universal Protein Resource (SIB · EBI · PIR)

Curated protein function, domain architecture, and post-translational modifications. UniProt powers our protein-level summaries and the domain maps that show which part of a protein a variant disrupts.

uniprot.org
MedlinePlus Genetics
U.S. National Library of Medicine (NIH)

Plain-English clinical summaries that have been reviewed by the NIH. We use it to translate primary-literature findings into patient-readable prose without losing accuracy.

medlineplus.gov
Genomics England PanelApp
NHS Genomic Medicine Service test directory

The clinical actionability layer. PanelApp tells us which genes are green-listed for the NHS Genomic Medicine Service R-codes - so each profile shows whether it's covered by an NHS-funded test, not just whether it's interesting in research.

panelapp.genomicsengland.co.uk
ClinVar
NCBI · variant–phenotype archive

The world's largest public archive of variant interpretations. We weight every classification by ClinVar's gold-star evidence levels, so a 4-star ENIGMA call carries more weight than a single-submitter assertion.

ncbi.nlm.nih.gov/clinvar
OMIM
Online Mendelian Inheritance in Man · Johns Hopkins

The disease ontology. OMIM IDs anchor every condition page to a stable clinical-genetics identifier - and they're the deduplication key that prevents two pages of the same syndrome under different aliases.

omim.org
gnomAD
Genome Aggregation Database · Broad Institute

807,162 sequenced individuals across 9 ancestry groups. gnomAD's allele frequencies drive every carrier-frequency estimate on the site, with explicit AC ≥ 2 filters to avoid singleton inflation.

gnomad.broadinstitute.org
PubMed
NCBI · biomedical literature index

Every clinical claim on the site traces back to a peer-reviewed paper. PubMed IDs are the citation backbone - every reference resolves to its underlying study, not to a Wikipedia summary.

pubmed.ncbi.nlm.nih.gov

Content is drafted from these sources, audited against an internal safety + style rulebook, and published with the source attribution baked into every gene and condition page - including the data version and licence terms of every dataset we draw from.

The Jeen Library is educational content, not medical or genetic advice. It does not replace a consultation with a qualified healthcare professional or genetic counsellor. Pages flagged as draft are undergoing manual clinical review.