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Gene

CACNA1I

calcium voltage-gated channel subunit alpha1 I

Summary

Cytogenetic location
22q13.1
Coordinates
Chromosome 22: 39,570,753–39,689,735 (GRCh38)
Exons
37 exons across 119 kb
Protein
2,223 amino acids
Also known as
Cav3.3
MANE Select transcript
ENST00000402142.4NM_021096.4
Locus type
gene with protein product
  • Very high
  • Confident
  • Low
  • Very low

Curated reports relevant to this gene

No Genome Test report reads CACNA1I yet. The test sequences your whole genome, so your data includes it all the same.

How CACNA1I is laid out

  • Coding sequence
  • Untranslated region
  • Intron
  • Direction of transcription
  • Known disease-causing sites
  • Stretches short reads find hard
Chromosome 22, with a bracket where CACNA1I sits. CACNA1I and 15 genes near it on chromosome 22, from 39,130,244 to 40,130,243.Chromosome 2222q13.1p13p12p11.2p11.1q11.1q11.21q11.22q11.23q12.1q12.2q12.3q13.1q13.2q13.31q13.32q13.3339.2 Mb39.4 Mb39.6 Mb39.8 Mb40 MbCBX7: 39,119,306–39,152,719, reverse strandCBX7PDGFB: 39,221,746–39,244,982, reverse strandPDGFBRPL3: 39,312,870–39,320,389, reverse strandRPL3SYNGR1: 39,349,856–39,385,760, forward strandSYNGR1TAB1: 39,399,778–39,437,128, forward strandTAB1MGAT3: 39,447,127–39,492,194, forward strandMGAT3MIEF1: 39,499,432–39,518,132, forward strandMIEF1MIURF: 39,504,231–39,504,443, forward strandMIURFATF4: 39,519,695–39,522,690, forward strandATF4RPS19BP1: 39,522,878–39,532,826, reverse strandRPS19BP1CACNA1I: 39,570,753–39,689,735, forward strandCACNA1IENTHD1: 39,743,044–39,893,864, reverse strandENTHD1GRAP2: 39,901,084–39,973,721, forward strandGRAP2TMA7B: 39,960,397–39,964,905, forward strandTMA7BSACK1F: 39,994,917–40,043,534, forward strandSACK1FTNRC6B: 40,044,756–40,335,808, forward strandTNRC6BDiagram of CACNA1I: 37 exons on the forward strand of chromosome 22Exon 11: 1 known disease-causing siteExon 21: 1 known disease-causing siteExon 1: 39,570,753–39,570,988, 236 basesExon 2: 39,598,151–39,598,262, 112 basesExon 3: 39,600,520–39,600,653, 134 basesExon 4: 39,619,310–39,619,407, 98 basesExon 5: 39,634,565–39,634,724, 160 basesExon 6: 39,640,867–39,641,182, 316 basesExon 7: 39,642,797–39,642,889, 93 basesExon 8: 39,646,569–39,646,881, 313 basesExon 9: 39,647,822–39,647,926, 105 basesExon 10: 39,649,501–39,649,925, 425 basesExon 11: 39,658,152–39,658,303, 152 basesExon 12: 39,658,931–39,659,116, 186 basesExon 13: 39,659,433–39,659,550, 118 basesExon 14: 39,659,697–39,659,852, 156 basesExon 15: 39,660,344–39,660,437, 94 basesExon 16: 39,661,108–39,661,310, 203 basesExon 17: 39,661,965–39,662,435, 471 basesExon 18: 39,662,776–39,662,876, 101 basesExon 19: 39,663,718–39,663,841, 124 basesExon 20: 39,664,091–39,664,159, 69 basesExon 21: 39,664,739–39,664,923, 185 basesExon 22: 39,665,498–39,665,624, 127 basesExon 23: 39,665,881–39,666,006, 126 basesExon 24: 39,668,292–39,668,381, 90 basesExon 25: 39,670,038–39,670,230, 193 basesExon 26: 39,670,803–39,670,954, 152 basesExon 27: 39,672,199–39,672,308, 110 basesExon 28: 39,672,949–39,673,082, 134 basesExon 29: 39,673,963–39,674,033, 71 basesExon 30: 39,677,341–39,677,419, 79 basesExon 31: 39,677,987–39,678,108, 122 basesExon 32: 39,679,107–39,679,445, 339 basesExon 33: 39,679,722–39,679,868, 147 basesExon 34: 39,680,930–39,681,052, 123 basesExon 35: 39,682,496–39,682,661, 166 basesExon 36: 39,684,302–39,684,498, 197 basesExon 37: 39,685,761–39,689,735, 3,975 bases15101520253035375′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 10 kb of the gene's 119 kb; 6,672 of those bases code for the protein.

How a genome test reads CACNA1I

2

positions in CACNA1I where ClinVar classes a change as pathogenic or likely pathogenic

None of them falls in a region short reads find hard.

A whole genome covers all 119 kb of CACNA1I, introns included, not only the 10 kb of exons.

Traits linked to CACNA1I

The Human Phenotype Ontology lists these as features of the rare conditions CACNA1I can cause. Each trait's page lists the other genes linked to it.

External links

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.
  • ClinVar and the GIAB stratifications: known disease-causing sites, and the regions short reads find hard.
  • The Human Phenotype Ontology, release 2026-09-01: the traits linked to the gene. Find out more at hpo.jax.org.
  • Data release 2026.10.16-c6eea6bf.

Cite this page

APA

Dante Labs. (n.d.). CACNA1I gene: calcium voltage-gated channel subunit alpha1 I. Retrieved 17 October 2026, from https://dantelabs.com/genes/cacna1i

Vancouver

Dante Labs. CACNA1I gene: calcium voltage-gated channel subunit alpha1 I [Internet]. [cited 17 October 2026]. Available from: https://dantelabs.com/genes/cacna1i

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