CALB2 p.Thr156Ala

Variant names:

• chr16-71383433-A-G
• NM_001740.5:c.466A>G
• CALB2 p.Thr156Ala

Your query was ambiguous. Multiple possible variants found:

• chr16-71383433-A-G
• chr16-71383433-ACC-GCT
• chr16-71383433-ACC-GCA
• chr16-71383433-ACC-GCG

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001740.5(CALB2):​c.466A>G​(p.Thr156Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CALB2 NM_001740.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.13
• Publications: 0 publications found

Genes affected

CALB2 (HGNC:1435): (calbindin 2) This gene encodes an intracellular calcium-binding protein belonging to the troponin C superfamily. Members of this protein family have six EF-hand domains which bind calcium. This protein plays a role in diverse cellular functions, including message targeting and intracellular calcium buffering. It also functions as a modulator of neuronal excitability, and is a diagnostic marker for some human diseases, including Hirschsprung disease and some cancers. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2010]

LINC02136 (HGNC:52995): (long intergenic non-protein coding RNA 2136)

LOC105371332 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.803

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001740.5. 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
	CALB2	NM_001740.5	MANE Select	c.466A>G	p.Thr156Ala	missense	Exon 6 of 11	NP_001731.2	A0A140VK08
	CALB2	NM_007088.4		c.466A>G	p.Thr156Ala	missense	Exon 6 of 9	NP_009019.1	A6NER6
	CALB2	NR_027910.3		n.536A>G		non_coding_transcript_exon	Exon 6 of 10

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CALB2	ENST00000302628.9	TSL:1 MANE Select	c.466A>G	p.Thr156Ala	missense	Exon 6 of 11	ENSP00000307508.4	P22676
	CALB2	ENST00000870349.1		c.583A>G	p.Thr195Ala	missense	Exon 7 of 12	ENSP00000540408.1
	CALB2	ENST00000959115.1		c.466A>G	p.Thr156Ala	missense	Exon 6 of 11	ENSP00000629174.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.42
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.040
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.30	T
Eigen	Uncertain	0.44
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Pathogenic	0.97	D
M_CAP	Uncertain	0.096	D
MetaRNN	Pathogenic	0.80	D
MetaSVM	Benign	-0.50	T
MutationAssessor	Benign	1.3	L
PhyloP100		8.1
PrimateAI	Uncertain	0.79	T
PROVEAN	Uncertain	-2.8	D
REVEL	Uncertain	0.47
Sift	Benign	0.12	T
Sift4G	Benign	0.16	T
Varity_R		0.43
gMVP		0.67

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr16-71417336;