X-74421631-CGCCGCGATGGCGCTGCAAAGCCAGGCGAGCGAGGAAGCAAAGGGGCCCTGGCAGGAGGCAGACCAGGAACAGCAGGAGCCGGTGGGTAGCCCAGAGCCGGAGTCTGAGCCGGAGCCTGAGCCCGAGCCCGAGCCCGTGCCAGTGCCCCCGCCCGAGCCCCAGCCGGAGCCCCAGCCCCTACCGGACCCCGCACCCCTGCCGGAGCTGGAGTTCGAGTCCGAGCGGGTGCACGAACCCGAGCCCACGCCTACGGTAGAGACCCGCGGCACCGCGCGCGGCTTCCAGCCTCCCGAAGGTGGCTTCGGCTGGGTGGTGGTGTTCGCTGCCACCTGGTGCAACGGCTCCATCTTCGGCATCCATAACTCTGTCGGGATCCTCTACTCCATGCTGCTAGAGGAGGAAAAGGAAAAAAATCGCCAAGTGGAGTTCCAAGCAGGTGAG-C

Position:

• chrX-74421631-CGCCGCGATGGCGCTGCAAAGCCAGGCGAGCGAGGAAGCAAAGGGGCCCTGGCAGGAGGCAGACCAGGAACAGCAGGAGCCGGTGGGTAGCCCAGAGCCGGAGTCTGAGCCGGAGCCTGAGCCCGAGCCCGAGCCCGTGCCAGTGCCCCCGCCCGAGCCCCAGCCGGAGCCCCAGCCCCTACCGGACCCCGCACCCCTGCCGGAGCTGGAGTTCGAGTCCGAGCGGGTGCACGAACCCGAGCCCACGCCTACGGTAGAGACCCGCGGCACCGCGCGCGGCTTCCAGCCTCCCGAAGGTGGCTTCGGCTGGGTGGTGGTGTTCGCTGCCACCTGGTGCAACGGCTCCATCTTCGGCATCCATAACTCTGTCGGGATCCTCTACTCCATGCTGCTAGAGGAGGAAAAGGAAAAAAATCGCCAAGTGGAGTTCCAAGCAGGTGAG-C

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_006517.5(SLC16A2):​c.-6_430+5del variant causes a splice donor, splice donor 5th base, coding sequence, 5 prime UTR, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 22)
• Consequence: SLC16A2 NM_006517.5 splice_donor, splice_donor_5th_base, coding_sequence, 5_prime_UTR, intron
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 3.39

Genes affected

SLC16A2 (HGNC:10923): (solute carrier family 16 member 2) This gene encodes an integral membrane protein that functions as a transporter of thyroid hormone. The encoded protein facilitates the cellular importation of thyroxine (T4), triiodothyronine (T3), reverse triiodothyronine (rT3) and diidothyronine (T2). This gene is expressed in many tissues and likely plays an important role in the development of the central nervous system. Loss of function mutations in this gene are associated with psychomotor retardation in males while females exhibit no neurological defects and more moderate thyroid-deficient phenotypes. This gene is subject to X-chromosome inactivation. Mutations in this gene are the cause of Allan-Herndon-Dudley syndrome. [provided by RefSeq, Mar 2012]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease,
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant X-74421631-CGCCGCGATGGCGCTGCAAAGCCAGGCGAGCGAGGAAGCAAAGGGGCCCTGGCAGGAGGCAGACCAGGAACAGCAGGAGCCGGTGGGTAGCCCAGAGCCGGAGTCTGAGCCGGAGCCTGAGCCCGAGCCCGAGCCCGTGCCAGTGCCCCCGCCCGAGCCCCAGCCGGAGCCCCAGCCCCTACCGGACCCCGCACCCCTGCCGGAGCTGGAGTTCGAGTCCGAGCGGGTGCACGAACCCGAGCCCACGCCTACGGTAGAGACCCGCGGCACCGCGCGCGGCTTCCAGCCTCCCGAAGGTGGCTTCGGCTGGGTGGTGGTGTTCGCTGCCACCTGGTGCAACGGCTCCATCTTCGGCATCCATAACTCTGTCGGGATCCTCTACTCCATGCTGCTAGAGGAGGAAAAGGAAAAAAATCGCCAAGTGGAGTTCCAAGCAGGTGAG-C is Pathogenic according to our data. Variant chrX-74421631-CGCCGCGATGGCGCTGCAAAGCCAGGCGAGCGAGGAAGCAAAGGGGCCCTGGCAGGAGGCAGACCAGGAACAGCAGGAGCCGGTGGGTAGCCCAGAGCCGGAGTCTGAGCCGGAGCCTGAGCCCGAGCCCGAGCCCGTGCCAGTGCCCCCGCCCGAGCCCCAGCCGGAGCCCCAGCCCCTACCGGACCCCGCACCCCTGCCGGAGCTGGAGTTCGAGTCCGAGCGGGTGCACGAACCCGAGCCCACGCCTACGGTAGAGACCCGCGGCACCGCGCGCGGCTTCCAGCCTCCCGAAGGTGGCTTCGGCTGGGTGGTGGTGTTCGCTGCCACCTGGTGCAACGGCTCCATCTTCGGCATCCATAACTCTGTCGGGATCCTCTACTCCATGCTGCTAGAGGAGGAAAAGGAAAAAAATCGCCAAGTGGAGTTCCAAGCAGGTGAG-C is described in ClinVar as [Pathogenic]. Clinvar id is 1077180.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC16A2	NM_006517.5	c.-6_430+5del		splice_donor_variant, splice_donor_5th_base_variant, coding_sequence_variant, 5_prime_UTR_variant, intron_variant	1/6	ENST00000587091.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC16A2	ENST00000587091.6	c.-6_430+5del		splice_donor_variant, splice_donor_5th_base_variant, coding_sequence_variant, 5_prime_UTR_variant, intron_variant	1/6	1	NM_006517.5	P1
SLC16A2	ENST00000636771.1			splice_donor_variant, splice_donor_5th_base_variant, coding_sequence_variant, 5_prime_UTR_variant, intron_variant, NMD_transcript_variant	1/7	5

Frequencies

GnomAD3 genomes Cov.: 22

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 22

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Allan-Herndon-Dudley syndrome Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Genetics and Prenatal Diagnosis Center, The First Affiliated Hospital of Zhengzhou University

May 13, 2021

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Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-73641466;