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Allele frequencies for the nine STR loci included in the AmpFlSTR Profiler kit were determined in a Thai population of 100 unrelated individuals.
Allele frequencies for three STR loci, namely, CSF1PO, HUMTHO1 and TPOX, and the AMP-FLP locus D1S80 were obtained from a sample of 351 unrelated Chinese in Hong Kong.
Allele and haplotype frequencies of seven Y-chromosome STR loci were determined from a sample of 330 unrelated males in the Korean population.
The frequency distributions of eight STR loci were surveyed in 510 unrelated individuals from the Korean population
Allele frequencies for the 13 STR core loci (D3S1358, VWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317, D7S820, CSF1PO, TPOX, THO1 and D16S539) included in the AmpFlSTR((R)) Profiler Plus and AmpFlSTR((R)) Cofiler kits were obtained for a sample of 700-800 genetically unrelated Brazilians. The expected performance of these loci for personal identification and paternity testing in the Brazilian population was estimated.
A population study on 10 short tandem repeat (STR) loci was performed on 202 unrelated Czech Caucasians. DNA, initially frozen, was thawed and placed FTA paper. The DNA was purified in situ. DNA was amplified by PCR using the AmpFlSTR SGM Plus amplification kit.
We report the use of DNA profiles from six STR loci for inferring the ethnic origin of a crime stain and discuss how such inference may be used as intelligence information to reduce the expected number of interviews to resolve a case. To enable this work, databases have been created for five British ethnic groups (Caucasians, Afro-Caribbeans, Indian sub-continentals, Southeast Asians and Middle Easterners) that together comprise 99.7% of the UK population.
The allelic frequency and structural characteristics of two STR loci D8S580 and D22S442 were investigated using blood samples from 143 unrelated healthy Japanese individuals. Thirty-eight alleles in D8S580 locus and 13 alleles in D22S442 locus were identified. The discrimination power, heterozygosity, and the polymorphic information content of those loci displayed high values (0.98, 0.88, and 0.87 in D8S580 and 0.97, 0.86 and 0.85 in D22S442), and their frequency distributions met Hardy-Weinberg equilibrium expectations. The allelic pattern of D8S580 was complex and differentiated into three groups (group I: alleles 184-194bp; group II: alleles 203-223, 235, 239, 243, 252 and 255bp; group III: alleles 227-286bp). Most of their alleles contained five categories of repeat units (A: aaaag; B: aaag; C: aagg; D: caag; E: agaa). On the other hand, D22S442 contained only two types of repeat units (A: agga; B: aggg). The present study, hence, proves that both D8S580 and D22S442 are highly polymorphic and represent stable genetic markers applicable to forensic investigations.
Allele distributions for the nine STR loci included in the AmpFlSTR Profiler Plus kit were evaluated in a Thai population of 300 unrelated individuals.
Distribution of allele frequencies for 12 STR loci (CSFIPO, TPOX, THO1, F13A01, FESFPS, vWA, D16S539, D7S820, D13S317, HPRTB, F13B and LPL) has been studied for the first time in unrelated Tamil (south India) population.
Allele frequencies for the six STR loci HumTHO1, TPOX, CSF1PO, vWA, FESFPS and F13AO1 were obtained from 94-120 unrelated individuals belonging to three important population groups of eastern India.
Allele frequencies for the six PCR based loci HLA DQA1, LDLR, GYPA, HBGG, D&S8, Gc, and three STR loci HUMHPRTB, HUMF13B & HUMLPL were analyzed in 624 healthy unrelated individuals belonging to eight important population groups of two major ethnic populations: Indo-Caucasian and Indo-Mongoloid.
16 Y-specific STR loci have been analysed in 711 males from 12 populations in Pakistan. Individual loci showed between 4 and 10 alleles, and diversities ranged from 0.07 to 0.77. A total of 527 different haplotypes were found and the haplotype diversity ranged from 0.92 to 0.99 for the different populations. 446 haplotypes occurred in single individuals, and only 19 haplotypes were present in more than three males, but two striking examples of haplotype sharing were found, one involving 13 individuals, and the other 17. The 13 individuals were all Parsis, and 16 of the 17 were Brahuis, providing evidence for population substructuring.
DNA intelligence databases were installed successfully in various countries during the past few years. It is a general trend that laboratories performing STR analysis for DNA databases have to adjust to increased sample through-put, especially when dealing with a high number of reference samples. In contrast to routine forensic casework analysis, where samples of suspects and unknown samples are interpreted with regard to the specific circumstances of the case and are kept distinctly apart from other cases, DNA databases consist of single, primarily unlinked DNA profiles. Problems areas associated with the high number of anonymous DNA profiles are the risk of logistic errors, such as sample mix-up during the laboratory procedure, and the risk of typing errors during manual transcription of data and/or results. Thus, DNA databases clearly require new laboratory strategies to rise to the challenge. This paper presents an efficient automated laboratory strategy on the platform of a laboratory management information system (LIMS) with the Austrian DNA Intelligence Database as example. Two goals were tackled in particular: first, data safety by avoiding both manual interaction during critical laboratory steps (i.e. when DNA is transferred form one tube into another), and errors due to manual transcription of sample information and results. Secondly, efficient sample processing by automizing the laboratory procedure with the help of robotic instruments, thus, giving the DNA staff more time to analyze data.
Allele frequencies for nine STR loci namely, D3S1358, HUMvWA, HUMFIBRA/FGA, D8S1179, D21S11, D18S51, D5S818, D13S317 and D7S820 were obtained from a sample of 198 unrelated Chinese in Beijing, China.
Frequency data of short tandem repeats (STR) loci included in the AmpF/STR Profiler Plus kit were collected from a sample of 253 random, unrelated individuals born in the south Poland region. All loci met Hardy-Weinberg expectation.
Allele and haplotype frequencies of seven Y-chromosome STR loci were determined from a sample of 95 and 16 unrelated males from Madeira and Porto Santo Islands, respectively.
Short tandem repeats (STR) at loci HumFES/FPS, HumVWA, HumCSF1PO, HumTH01, HumFXIIIA01, HumTPOX, HumCD4, D3S1358 are markers of choice for population genetics and validated systems for forensic use. In this report, we analysed their allele frequency distribution in a sample of native blood donors from the two departments of Corsica island (France). Deviations from the Hardy-Weinberg rule and heterozygosity values consistently suggested a spatial differentiation of allele and genotype frequencies across the island. Pairwise comparisons showed that Corsican gene pool presents a high level of heterogeneity between departments and substantially differs from that of neighbouring and historically-related populations. The results suggest the use of local databases to calculate a priori statistics in human identity testing.