NM_173853.4:c.*61G>C

Variant names:

• chr2-27444241-G-C
• rs10208616
• NM_173853.4:c.*61G>C

Variant summary

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

The NM_173853.4(KRTCAP3):​c.*61G>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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)
• Consequence: KRTCAP3 NM_173853.4 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.169
• Publications: 2 publications found

Genes affected

KRTCAP3 (HGNC:28943): (keratinocyte associated protein 3) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

IFT172 (HGNC:30391): (intraflagellar transport 172) This gene encodes a subunit of the intraflagellar transport subcomplex IFT-B. Subcomplexes IFT-A and IFT-B are necessary for ciliary assembly and maintenance. Mutations in this gene have been associated with skeletal ciliopathies, with or without polydactyly, such as such short-rib thoracic dysplasias 1, 9 or 10. [provided by RefSeq, Mar 2014]

IFT172 Gene-Disease associations (from GenCC):

• ciliopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• short-rib thoracic dysplasia 10 with or without polydactyly

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
• Bardet-Biedl syndrome 20

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• retinitis pigmentosa 71

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

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Bardet-Biedl syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Jeune syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• short-rib thoracic dysplasia 9 with or without polydactyly

  Inheritance: AR 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=-0.63).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_173853.4. 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
	KRTCAP3	NM_173853.4	MANE Select	c.*61G>C		3_prime_UTR	Exon 7 of 7	NP_776252.2	Q53RY4-1
	KRTCAP3	NM_001321325.2		c.*58G>C		3_prime_UTR	Exon 7 of 7	NP_001308254.1	Q53RY4-1
	KRTCAP3	NM_001168364.2		c.*5+180G>C		intron	N/A	NP_001161836.1	Q53RY4-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KRTCAP3	ENST00000288873.7	TSL:1 MANE Select	c.*61G>C		3_prime_UTR	Exon 7 of 7	ENSP00000288873.3	Q53RY4-1
	KRTCAP3	ENST00000872249.1		c.*58G>C		3_prime_UTR	Exon 7 of 7	ENSP00000542308.1
	KRTCAP3	ENST00000407293.5	TSL:2	c.*58G>C		3_prime_UTR	Exon 6 of 6	ENSP00000384689.1	Q53RY4-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 6

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 15

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.63
CADD	Benign	2.8
DANN	Benign	0.75
PhyloP100		0.17

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: rs10208616; hg19: chr2-27667108;