chr19-41354714-C-T

Variant names:

• chr19-41354714-C-T
• rs368915262
• NM_030578.4:c.514G>A

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1 PM2 PP3_Moderate

The NM_030578.4(B9D2):​c.514G>A​(p.Gly172Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000958 in 1,461,726 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. G172G) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000096 (0 hom.)
• Consequence: B9D2 NM_030578.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.06
• Publications: 5 publications found

Genes affected

B9D2 (HGNC:28636): (B9 domain containing 2) This gene encodes a B9 domain protein, which are exclusively found in ciliated organisms. The gene is upregulated during mucociliary differentiation, and the encoded protein localizes to basal bodies and cilia. Disrupting expression of this gene results in ciliogenesis defects. [provided by RefSeq, Oct 2009]

TMEM91 (HGNC:32393): (transmembrane protein 91) Predicted to act upstream of or within hematopoietic progenitor cell differentiation. Predicted to be integral component of membrane. Predicted to be active in intracellular membrane-bounded organelle and membrane. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000255730 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM1: In a chain B9 domain-containing protein 2 (size 174) in uniprot entity B9D2_HUMAN there are 6 pathogenic changes around while only 2 benign (75%) in NM_030578.4
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.924

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030578.4. 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
	B9D2	NM_030578.4	MANE Select	c.514G>A	p.Gly172Ser	missense	Exon 4 of 4	NP_085055.2	Q9BPU9

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	B9D2	ENST00000243578.8	TSL:1 MANE Select	c.514G>A	p.Gly172Ser	missense	Exon 4 of 4	ENSP00000243578.2	Q9BPU9
	TMEM91	ENST00000539627.5	TSL:1	c.-30+3512C>T		intron	N/A	ENSP00000441900.1	F5GWC9
	B9D2	ENST00000675972.1		c.514G>A	p.Gly172Ser	missense	Exon 4 of 4	ENSP00000501911.1	Q9BPU9

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000798 AC: 2 AN: 250706 AF XY: 0.00000737

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000883

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000958 AC: 14 AN: 1461726 Hom.: 0 Cov.: 32 AF XY: 0.00000550 AC XY: 4 AN XY: 727172

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53266

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

European-Non Finnish (NFE) AF: 0.00000899 AC: 10 AN: 1112004

Other (OTH) AF: 0.00 AC: 0 AN: 60392

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.44
BayesDel_addAF	Uncertain	0.028	T
BayesDel_noAF	Benign	-0.11
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.36	T
Eigen	Uncertain	0.33
Eigen_PC	Benign	0.15
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.84	T
M_CAP	Pathogenic	0.47	D
MetaRNN	Pathogenic	0.92	D
MetaSVM	Uncertain	-0.099	T
MutationAssessor	Uncertain	2.9	M
PhyloP100		7.1
PrimateAI	Uncertain	0.61	T
PROVEAN	Pathogenic	-5.0	D
REVEL	Uncertain	0.52
Sift	Uncertain	0.0080	D
Sift4G	Uncertain	0.021	D
Polyphen		1.0	D
Vest4		0.85
MutPred		0.70		Gain of disorder (P = 0.0812)
MVP		0.58
MPC		0.60
ClinPred		0.99	D
GERP RS		3.0
Varity_R		0.55
gMVP		0.73
Mutation Taster		=17/83	disease causing

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: rs368915262; hg19: chr19-41860619; COSMIC: COSV54684646; COSMIC: COSV54684646;