3-132681962-C-T

Position:

• chr3-132681962-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_153240.5(NPHP3):​c.3941G>A​(p.Ser1314Asn) variant causes a missense change. 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S1314T) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NPHP3 NM_153240.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.87

Genes affected

NPHP3 (HGNC:7907): (nephrocystin 3) This gene encodes a protein containing a coiled-coil (CC) domain, a tubulin-tyrosine ligase (TTL) domain, and a tetratrico peptide repeat (TPR) domain. The encoded protein interacts with nephrocystin, it is required for normal ciliary development, and it functions in renal tubular development. Mutations in this gene are associated with nephronophthisis type 3, and also with renal-hepatic-pancreatic dysplasia, and Meckel syndrome type 7. Naturally occurring read-through transcripts exist between this gene and the downstream ACAD11 (acyl-CoA dehydrogenase family, member 11) gene. [provided by RefSeq, Feb 2011]

NPHP3-ACAD11 (HGNC:48351): (NPHP3-ACAD11 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring NPHP3 (nephronophthisis 3, adolescent) and ACAD11 (acyl-CoA dehydrogenase family, member 11) genes on chromosome 3. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is thus unlikely to produce a protein product. [provided by RefSeq, Feb 2011]

NPHP3 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.27901947).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NPHP3	NM_153240.5	c.3941G>A	p.Ser1314Asn	missense_variant	27/27	ENST00000337331.10	NP_694972.3
NPHP3-ACAD11	NR_037804.1	n.3947G>A		non_coding_transcript_exon_variant	26/45

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NPHP3	ENST00000337331.10	c.3941G>A	p.Ser1314Asn	missense_variant	27/27	1	NM_153240.5	ENSP00000338766.5
NPHP3-ACAD11	ENST00000632629.1	c.587G>A	p.Ser196Asn	missense_variant	4/5	2		ENSP00000488520.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Uncertain	0.061	T
BayesDel_noAF	Benign	-0.15
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.31	T
Eigen	Benign	-0.044
Eigen_PC	Benign	0.044
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.076	D
MetaRNN	Benign	0.28	T
MetaSVM	Uncertain	0.058	D
MutationAssessor	Benign	1.8	L
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-0.36	N
REVEL	Uncertain	0.33
Sift	Benign	0.049	D
Sift4G	Benign	0.34	T
Polyphen		0.38	B
Vest4		0.43
MutPred		0.16		Gain of glycosylation at T1312 (P = 0.0764);
MVP		0.85
MPC		0.19
ClinPred		0.93	D
GERP RS		5.0
Varity_R		0.19
gMVP		0.54

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

Publications

LitVar

Other links and lift over

dbSNP: rs75316802; hg19: chr3-132400806;