D9S1122

Other Autosomal STRs

D9S1122 is a tetranucleotide short tandem repeat (STR) locus on chromosome 9 (9q21.2), an autosomal STR outside the CODIS core set.

Basic Information

Chromosome

Cytogenetic Location

9q21.2

STRNaming template (FSSG)

TAGA[1]TAGG[1]TAGA[n]

Type

Tetranucleotide

Alternative motifs (STRbase, historical notation)

TAGA TCGA [TAGA]n

Reference Allele

Explore internal sequence structure

See how the STRNaming name of the reference allele maps onto its sequence: repeat blocks, flanking regions and flanking variants.

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Genomic Coordinates

GRCh38/hg38

Repeat region

chr9:77,073,826-77,073,873 (48 bp)

Motif and sequences are shown on the forward (+) strand of GRCh38.

Sequence structure (FSSG)

ISFG minimum range, bracketing and kit coverage from the Forensic Sequence Structure Guide, FSSG v6.1 (STRidER; distributed as FSSG_v6-1_beta.xlsx).

STRNaming Formatted ISFG Minimum Range for Common Alleles (FSSG)

TAGA[1]TAGG[1]TAGA[n]

TAGA[1]TAGG[1]TAGA[1]TCGA[1]TAGA[n]

Reference allele (GRCh38) named with STRNaming 1.2.1

CE12_TAGA[1]TAGG[1]TAGA[12]

Historical bracketing (2016-2023)

[TAGA]12

ISFG minimum range (GRCh38)

chr9:77,073,812-77,073,879 (68 bp)

MPS kits covering this locus

ForenSeq Signature Prep/Plus and MainstAY
IDSeek OmniSTR Global (Does not cover the whole ISFG minimum range.)

Kit range does not cover the whole ISFG minimum range of this locus (chr9:77,073,812-77,073,879), according to the kit ranges in the FSSG. Bases of the minimum range outside a kit's range are not sequenced by that kit; bases filled in from the reference should be identified as such.

Allele frequencies at a glance

Most common allele per population group, with its frequency and the sample size, in the capillary electrophoresis data of pop.STR / SP-SMART.

Africa: Allele 12 (0.374, n = 103)
Native American: Allele 13 (0.633, n = 64)
East Asia: Allele 13 (0.402, n = 220)
Central and South Asia: Allele 12 (0.351, n = 201)
Europe: Allele 12 (0.418, n = 152)
Middle East: Allele 12 (0.472, n = 158)
Oceania: Allele 12 (0.320, n = 25)

Allele frequencies by population group (pop.STR, CE). Alleles absent from every group are omitted.
Allele	AFR	NAM	EAS	CSA	EUR	MES	OCE
9	0.010	0	0.002	0.002	0.003	0	0
10	0.010	0.016	0.066	0.040	0.043	0.019	0.140
11	0.204	0.070	0.136	0.256	0.201	0.196	0.120
12	0.374	0.211	0.307	0.351	0.418	0.472	0.320
13	0.335	0.633	0.402	0.296	0.283	0.282	0.320
14	0.053	0.063	0.075	0.042	0.043	0.022	0.060
15	0.010	0.008	0.011	0.012	0.010	0.009	0.040
16	0.005	0	0	0	0	0	0

Allele frequencies by population group (pop.STR, CE). Alleles absent from every group are omitted.

Variant Alleles

STRbase reports 31 sequence variants across 12 allele designations.

11.2

14.3

Related markers

Other autosomal STRs

Browse the full STR marker catalog