chr2-61840157-G-C

Variant names:

• chr2-61840157-G-C
• rs748847284
• NM_001201543.2:c.847C>G

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001201543.2(FAM161A):​c.847C>G​(p.Arg283Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R283L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: FAM161A NM_001201543.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.10
• 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_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.975

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001201543.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAM161A	NM_001201543.2	MANE Select	c.847C>G	p.Arg283Gly	missense	Exon 3 of 7	NP_001188472.1
	FAM161A	NM_032180.3		c.847C>G	p.Arg283Gly	missense	Exon 3 of 6	NP_115556.2
	FAM161A	NR_037710.2		n.810C>G		non_coding_transcript_exon	Exon 3 of 6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAM161A	ENST00000404929.6	TSL:1 MANE Select	c.847C>G	p.Arg283Gly	missense	Exon 3 of 7	ENSP00000385158.1
	FAM161A	ENST00000405894.3	TSL:1	c.847C>G	p.Arg283Gly	missense	Exon 3 of 6	ENSP00000385893.3
	FAM161A	ENST00000456262.5	TSL:1	n.*362C>G		non_coding_transcript_exon	Exon 3 of 6	ENSP00000396105.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 32

ExAC AF: 0.0000414 AC: 5

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.65
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.020
CADD	Uncertain	26
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.096	T
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.88	D
M_CAP	Uncertain	0.10	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Benign	-0.59	T
MutationAssessor	Pathogenic	2.9	M
PhyloP100		5.1
PrimateAI	Benign	0.42	T
PROVEAN	Pathogenic	-6.1	D
REVEL	Uncertain	0.42
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.012	D
Polyphen		1.0	D
Vest4		0.82
MutPred		0.91		Gain of ubiquitination at K280 (P = 0.0395)
MVP		0.71
MPC		0.30
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.84
gMVP		0.41
Mutation Taster		=7/93	disease causing

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: rs748847284; hg19: chr2-62067292;