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Gene

CLDN18

claudin 18

Summary

Cytogenetic location
3q22.3
Coordinates
Chromosome 3: 138,010,165–138,033,649 (GRCh38)
Exons
5 exons across 23.5 kb
Protein
261 amino acids
Previous symbols
SFTPJ
MANE Select transcript
ENST00000183605.10NM_016369.4
Locus type
gene with protein product
  • Very high
  • Confident
  • Low
  • Very low

Reference genomeGRCh38

Positions on gene and variant pages follow this choice, in this browser.

Curated reports relevant to this gene

No Genome Test report reads CLDN18 yet. The test sequences your whole genome, so your data includes it all the same.

How CLDN18 is laid out

  • Coding sequence
  • Untranslated region
  • Intron
  • Direction of transcription
  • Stretches short reads find hard
Chromosome 3, with a bracket where CLDN18 sits. CLDN18 and 9 genes near it on chromosome 3, from 137,521,907 to 138,521,906.Chromosome 33q22.3p26.3p26.2p26.1p25.3p25.2p25.1p24.3p24.2p24.1p23p22.3p22.2p22.1p21.33p21.32p21.31p21.2p21.1p14.3p14.2p14.1p13p12.3p12.2p12.1p11.2p11.1q11.1q11.2q12.1q12.2q12.3q13.11q13.12q13.13q13.2q13.31q13.32q13.33q21.1q21.2q21.3q22.1q22.2q22.3q23q24q25.1q25.2q25.31q25.32q25.33q26.1q26.2q26.31q26.32q26.33q27.1q27.2q27.3q28q29137.6 Mb137.8 Mb138 Mb138.2 Mb138.4 MbSOX14: 137,764,315–137,766,334, forward strandSOX14CLDN18: 138,010,165–138,033,649, forward strandCLDN18DZIP1L: 138,029,828–138,115,857, reverse strandDZIP1LA4GNT: 138,122,901–138,132,416, reverse strandA4GNTDBR1: 138,160,988–138,174,953, reverse strandDBR1ARMC8: 138,187,248–138,298,389, forward strandARMC8NME9: 138,261,437–138,331,354, reverse strandNME9MRAS: 138,347,648–138,405,535, forward strandMRASESYT3: 138,434,570–138,481,686, forward strandESYT3CEP70: 138,494,339–138,594,538, reverse strandCEP70Diagram of CLDN18: 5 exons on the forward strand of chromosome 3Exon 1: 138,010,165–138,010,445, 281 basesExon 2: 138,023,658–138,023,822, 165 basesExon 3: 138,024,607–138,024,724, 118 basesExon 4: 138,029,797–138,029,907, 111 basesExon 5: 138,030,970–138,033,649, 2,680 bases123455′3′

Exons of the gene's MANE Select transcript (release v1.5), from NCBI and EMBL-EBI, on the GRCh38 reference genome.

Chromosome bands from UCSC's GRCh38 ideogram (2022-10-29).

Nearby genes from Ensembl release 116, on GRCh38.

Exons make up 3.4 kb of the gene's 23.5 kb; 786 of those bases code for the protein.

Where this comes from

  • HGNC: the gene's symbol, name, other symbols and location.
  • MANE Select v1.5, from NCBI and EMBL-EBI: the transcript, its exons and coding sequence.

Cite this page

APA

Dante Labs. (n.d.). CLDN18 gene: claudin 18. Retrieved 17 October 2026, from https://dantelabs.com/genes/cldn18

Vancouver

Dante Labs. CLDN18 gene: claudin 18 [Internet]. [cited 17 October 2026]. Available from: https://dantelabs.com/genes/cldn18

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