rs770730546

Variant names:

• chr5-35628481-C-A
• rs770730546
• NM_024867.4:c.80C>A

Your query was ambiguous. Multiple possible variants found:

• chr5-35628481-C-A
• chr5-35628481-C-G
• chr5-35628481-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_024867.4(SPEF2):​c.80C>A​(p.Ala27Glu) 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 benign outcome for this variant. 16/22 in silico tools predict 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. A27G) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SPEF2 NM_024867.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.16
• Publications: 0 publications found

Genes affected

SPEF2 (HGNC:26293): (sperm flagellar 2) Involved in sperm axoneme assembly. Located in sperm flagellum. Implicated in spermatogenic failure 43. [provided by Alliance of Genome Resources, Apr 2022]

SPEF2 Gene-Disease associations (from GenCC):

• primary ciliary dyskinesia

  Inheritance: AR, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• spermatogenic failure 43

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics
• non-syndromic male infertility due to sperm motility disorder

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10769379).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024867.4. 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
	SPEF2	NM_024867.4	MANE Select	c.80C>A	p.Ala27Glu	missense	Exon 2 of 37	NP_079143.3
	SPEF2	NM_144722.4		c.80C>A	p.Ala27Glu	missense	Exon 2 of 10	NP_653323.1	Q9C093-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SPEF2	ENST00000356031.8	TSL:1 MANE Select	c.80C>A	p.Ala27Glu	missense	Exon 2 of 37	ENSP00000348314.3	Q9C093-1
	SPEF2	ENST00000509059.5	TSL:1	c.80C>A	p.Ala27Glu	missense	Exon 2 of 19	ENSP00000421593.1	D6REZ4
	SPEF2	ENST00000282469.10	TSL:1	c.80C>A	p.Ala27Glu	missense	Exon 2 of 10	ENSP00000282469.6	Q9C093-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.24
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	12
DANN	Benign	0.69
DEOGEN2	Benign	0.0059	T
Eigen	Benign	-0.57
Eigen_PC	Benign	-0.41
FATHMM_MKL	Benign	0.30	N
LIST_S2	Benign	0.76	T
M_CAP	Benign	0.0066	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L
PhyloP100		1.2
PrimateAI	Benign	0.37	T
PROVEAN	Benign	1.3	N
REVEL	Benign	0.070
Sift	Benign	1.0	T
Sift4G	Benign	1.0	T
Polyphen		0.010	B
Vest4		0.28
MutPred		0.54		Gain of disorder (P = 0.0302)
MVP		0.048
MPC		0.17
ClinPred		0.40	T
GERP RS		2.6
Varity_R		0.070
gMVP		0.39
Mutation Taster		=82/18	polymorphism

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: rs770730546; hg19: chr5-35628583;