rs398123056

chr12-49964092-A-Gchr12-49964092-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM5

The NM_001651.4(AQP5):c.529A>G(p.Ile177Val) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000616 in 1,461,512 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/2 splice prediction tools predict no significant impact on normal splicing. 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. I177F) has been classified as Pathogenic.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: AQP5 NM_001651.4 missense, splice_region
• Scores: Splicing: ADA: 0.5320
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.46

Genes affected

AQP5 (HGNC:638): (aquaporin 5) Aquaporin 5 (AQP5) is a water channel protein. Aquaporins are a family of small integral membrane proteins related to the major intrinsic protein (MIP or AQP0). Aquaporin 5 plays a role in the generation of saliva, tears and pulmonary secretions. AQP0, AQP2, AQP5, and AQP6 are closely related and all map to 12q13. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM5: Other missense variant is known to change same aminoacid residue: Variant chr12-49964092-A-T is described in ClinVar as [Pathogenic]. Clinvar id is 65481.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AQP5	NM_001651.4	c.529A>G	p.Ile177Val	missense_variant, splice_region_variant	3/4	ENST00000293599.7
AQP5	XM_005268838.3	c.529A>G	p.Ile177Val	missense_variant, splice_region_variant	3/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AQP5	ENST00000293599.7	c.529A>G	p.Ile177Val	missense_variant, splice_region_variant	3/4	1	NM_001651.4	P1
AQP5	ENST00000553132.1	n.518A>G		non_coding_transcript_exon_variant	1/2	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.0000119 AC: 3 AN: 251414 Hom.: 0 AF XY: 0.0000147 AC XY: 2 AN XY: 135904

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000109

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461512 Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5 AN XY: 727086

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000151

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ExAC AF: 0.0000247 AC: 3

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.31
BayesDel_addAF	Benign	-0.056	T
BayesDel_noAF	Benign	-0.090
Cadd	Uncertain	24
Dann	Uncertain	1.0
DEOGEN2	Benign	0.41	T
Eigen	Uncertain	0.19
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Benign	0.80	T
M_CAP	Uncertain	0.15	D
MetaRNN	Uncertain	0.52	D
MetaSVM	Uncertain	0.52	D
MutationAssessor	Benign	2.0	M
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.73	T
PROVEAN	Benign	-0.73	N
REVEL	Uncertain	0.59
Sift	Benign	0.063	T
Sift4G	Benign	0.18	T
Polyphen		0.062	B
Vest4		0.60
MutPred		0.66		Loss of helix (P = 0.1299);
MVP		0.88
MPC		0.38
ClinPred		0.22	T
GERP RS		5.1
Varity_R		0.33
gMVP		0.58

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.53
dbscSNV1_RF	Benign	0.46
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: rs398123056; hg19: chr12-50357875;