chr8-127390708-C-T

Position:

• chr8-127390708-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NR_117099.1(CASC21):​n.458-1796C>T variant causes a intron, non coding transcript change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.88 in 152,208 control chromosomes in the GnomAD database, including 59,080 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.88 (59080 hom., cov: 32)
• Consequence: CASC21 NR_117099.1 intron, non_coding_transcript
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.582

Genes affected

CASC8 (HGNC:45129): (cancer susceptibility 8)

PCAT1 (HGNC:43022): (prostate cancer associated transcript 1) This gene produces a long non-coding RNA that promotes cell proliferation and is upregulated in prostate, colorectal, and other cancers. This RNA negatively regulates the BRCA2 tumor suppressor protein and positively regulates Myc oncoprotein. It contains binding sites for microRNAs, and may act as a sponge for microRNAs that regulate cell growth pathways. [provided by RefSeq, Dec 2017]

CASC21 (HGNC:):

POU5F1B (HGNC:9223): (POU class 5 homeobox 1B) This intronless gene was thought to be a transcribed pseudogene of POU class 5 homeobox 1, however, it has been reported that this gene can encode a functional protein. The encoded protein is nearly the same length as and highly similar to the POU class 5 homeobox 1 transcription factor, has been shown to be a weak transcriptional activator and may play a role in carcinogenesis and eye development. [provided by RefSeq, Apr 2009]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.902 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CASC21	NR_117099.1	n.458-1796C>T		intron_variant, non_coding_transcript_variant
CASC8	NR_117100.1	n.1176+30121G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CASC8	ENST00000502082.5	n.1176+30121G>A		intron_variant, non_coding_transcript_variant		1

Frequencies

GnomAD3 genomes AF: 0.880 AC: 133891 AN: 152090 Hom.: 59039 Cov.: 32

Gnomad AFR AF: 0.909

Gnomad AMI AF: 0.889

Gnomad AMR AF: 0.814

Gnomad ASJ AF: 0.928

Gnomad EAS AF: 0.868

Gnomad SAS AF: 0.848

Gnomad FIN AF: 0.923

Gnomad MID AF: 0.869

Gnomad NFE AF: 0.872

Gnomad OTH AF: 0.861

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.880 AC: 133991 AN: 152208 Hom.: 59080 Cov.: 32 AF XY: 0.882 AC XY: 65580 AN XY: 74394

Gnomad4 AFR AF: 0.909

Gnomad4 AMR AF: 0.814

Gnomad4 ASJ AF: 0.928

Gnomad4 EAS AF: 0.868

Gnomad4 SAS AF: 0.848

Gnomad4 FIN AF: 0.923

Gnomad4 NFE AF: 0.872

Gnomad4 OTH AF: 0.862

Alfa AF: 0.862 Hom.: 14090

Bravo AF: 0.869

Asia WGS AF: 0.847 AC: 2945 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.47
DANN	Benign	0.24

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs10441525; hg19: chr8-128402953;