NM_024867.4:c.80C>G

Variant names:

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

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_024867.4(SPEF2):​c.80C>G​(p.Ala27Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,402 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: SPEF2 NM_024867.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• 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 Submitted by: PanelApp Australia, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• non-syndromic male infertility due to sperm motility disorder

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.18387622).

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>G	p.Ala27Gly	missense	Exon 2 of 37	NP_079143.3
	SPEF2	NM_144722.4		c.80C>G	p.Ala27Gly	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>G	p.Ala27Gly	missense	Exon 2 of 37	ENSP00000348314.3	Q9C093-1
	SPEF2	ENST00000509059.5	TSL:1	c.80C>G	p.Ala27Gly	missense	Exon 2 of 19	ENSP00000421593.1	D6REZ4
	SPEF2	ENST00000282469.10	TSL:1	c.80C>G	p.Ala27Gly	missense	Exon 2 of 10	ENSP00000282469.6	Q9C093-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000796 AC: 2 AN: 251208 AF XY: 0.0000147

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1461402 Hom.: 0 Cov.: 30 AF XY: 0.00000825 AC XY: 6 AN XY: 726998

African (AFR) AF: 0.00 AC: 0 AN: 33458

American (AMR) AF: 0.00 AC: 0 AN: 44696

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39674

South Asian (SAS) AF: 0.0000812 AC: 7 AN: 86200

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53406

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111698

Other (OTH) AF: 0.00 AC: 0 AN: 60368

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.27
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.57
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.023	T
Eigen	Benign	-0.14
Eigen_PC	Benign	-0.086
FATHMM_MKL	Benign	0.49	N
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.0063	T
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		1.2
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-1.0	N
REVEL	Benign	0.032
Sift	Benign	0.24	T
Sift4G	Benign	0.27	T
Polyphen		0.42	B
Vest4		0.32
MutPred		0.47		Loss of helix (P = 0.0444)
MVP		0.076
MPC		0.11
ClinPred		0.51	D
GERP RS		2.6
Varity_R		0.13
gMVP		0.32
Mutation Taster		=87/13	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;