rs137853115

Variant names:

• chr3-160377485-G-C
• rs137853115
• NM_020800.3:c.315C>G

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_020800.3(IFT80):​c.315C>G​(p.His105Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: IFT80 NM_020800.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.300
• Publications: 5 publications found

Genes affected

IFT80 (HGNC:29262): (intraflagellar transport 80) The protein encoded by this gene is part of the intraflagellar transport complex B and is necessary for the function of motile and sensory cilia. Defects in this gene are a cause of asphyxiating thoracic dystrophy 2 (ATD2). Three transcript variants encoding two different isoforms have been found for this gene.[provided by RefSeq, Jun 2010]

TRIM59-IFT80 (HGNC:56756): (TRIM59-IFT80 readthrough (NMD candidate)) This locus represents naturally occurring readthrough transcription between the neighboring TRIM59 (tripartite motif containing 59) and IFT80 (intraflagellar transport 80) genes on chromosome 3. The readthrough transcript is unlikely to produce a protein product. [provided by RefSeq, Jun 2017]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.969
• PP5: Variant 3-160377485-G-C is Pathogenic according to our data. Variant chr3-160377485-G-C is described in ClinVar as Pathogenic. ClinVar VariationId is 989.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020800.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IFT80	NM_020800.3	MANE Select	c.315C>G	p.His105Gln	missense	Exon 4 of 20	NP_065851.1
	TRIM59-IFT80	NR_148402.1		n.2559C>G		non_coding_transcript_exon	Exon 5 of 21
	TRIM59-IFT80	NR_148403.1		n.2826C>G		non_coding_transcript_exon	Exon 5 of 21

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IFT80	ENST00000326448.12	TSL:1 MANE Select	c.315C>G	p.His105Gln	missense	Exon 4 of 20	ENSP00000312778.7
	IFT80	ENST00000483465.5	TSL:1	c.-97C>G		5_prime_UTR	Exon 3 of 19	ENSP00000418196.1
	TRIM59-IFT80	ENST00000483754.1	TSL:2	n.953-11333C>G		intron	N/A	ENSP00000456272.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Asphyxiating thoracic dystrophy 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.41	D
BayesDel_noAF	Pathogenic	0.35
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.65	D
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.47
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.94	D
M_CAP	Uncertain	0.14	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Uncertain	0.70	D
MutationAssessor	Pathogenic	4.3	H
PhyloP100		0.30
PrimateAI	Uncertain	0.78	T
PROVEAN	Pathogenic	-6.6	D
REVEL	Pathogenic	0.74
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.0050	D
Polyphen		1.0	D
Vest4		0.98
MutPred		0.90		Gain of ubiquitination at K100 (P = 0.1204)
MVP		0.93
MPC		0.64
ClinPred		0.99	D
GERP RS		2.4
Varity_R		0.38
gMVP		0.75
Mutation Taster		=13/87	disease causing (ClinVar)

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: rs137853115; hg19: chr3-160095273;