chr2-61825326-T-C

Variant names:

• chr2-61825326-T-C
• rs76144251
• ENST00000456262.5:n.*2627A>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000456262.5(FAM161A):​n.*2627A>G variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000331 in 301,928 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: not found (cov: 32)
  • Exomes 𝑓: 0.0000033 (0 hom.)
• Consequence: FAM161A ENST00000456262.5 non_coding_transcript_exon
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.181
• Publications: 0 publications found

Genes affected

FAM161A (HGNC:25808): (FAM161 centrosomal protein A) This gene belongs to the FAM161 family. It is expressed mainly in the retina. Mouse studies suggested that this gene is involved in development of retinal progenitors during embryogenesis, and that its activity is restricted to mature photoreceptors after birth. Mutations in this gene cause autosomal recessive retinitis pigmentosa-28. Alternatively spliced transcript variants have been identified.[provided by RefSeq, Jan 2011]

FAM161A Gene-Disease associations (from GenCC):

• retinitis pigmentosa 28

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• retinitis pigmentosa

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAM161A	NM_001201543.2	c.*1129A>G		3_prime_UTR_variant	Exon 7 of 7	ENST00000404929.6	NP_001188472.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAM161A	ENST00000404929.6	c.*1129A>G		3_prime_UTR_variant	Exon 7 of 7	1	NM_001201543.2	ENSP00000385158.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000331 AC: 1 AN: 301928 Hom.: 0 Cov.: 0 AF XY: 0.00000581 AC XY: 1 AN XY: 172068

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 8554

American (AMR) AF: 0.00 AC: 0 AN: 27272

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 10786

East Asian (EAS) AF: 0.00 AC: 0 AN: 9348

South Asian (SAS) AF: 0.00 AC: 0 AN: 59650

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 12364

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1150

European-Non Finnish (NFE) AF: 0.00000630 AC: 1 AN: 158762

Other (OTH) AF: 0.00 AC: 0 AN: 14042

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 1

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	6.0
DANN	Benign	0.61
PhyloP100		0.18

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs76144251; hg19: chr2-62052461;