12-49965105-G-C

Variant names:

• chr12-49965105-G-C
• rs41308104
• NM_001651.4:c.726G>C

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001651.4(AQP5):​c.726G>C​(p.Thr242Thr) variant causes a synonymous 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. Synonymous variant affecting the same amino acid position (i.e. T242T) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: AQP5 NM_001651.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.71
• Publications: 3 publications found

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]

AQP5-AS1 (HGNC:55474): (AQP5 and AQP2 antisense RNA 2)

LOC105369764 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.78).
• BP7: Synonymous conserved (PhyloP=-2.71 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001651.4. 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
	AQP5	NM_001651.4	MANE Select	c.726G>C	p.Thr242Thr	synonymous	Exon 4 of 4	NP_001642.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AQP5	ENST00000293599.7	TSL:1 MANE Select	c.726G>C	p.Thr242Thr	synonymous	Exon 4 of 4	ENSP00000293599.5
	AQP5	ENST00000553132.1	TSL:2	n.715G>C		non_coding_transcript_exon	Exon 2 of 2
	AQP5-AS1	ENST00000750790.1		n.301+578C>G		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 13

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	0.058
DANN	Benign	0.70
PhyloP100		-2.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs41308104; hg19: chr12-50358888;