ObjectiveTo investigate genetic polymorphism of 3 STR loci in Bouyei ethnic group in Guizhou.Methods The DNAs of 101 healthy unrelated Bouyei individuals in Guizhou were extracted using chelex-100 method and were multiplex amplificated by PCR technique and the denatured PAGE was used, the PCR product was typied using silver stain method. The data was statistically analysed by modified-powerstat software package. Results A total of 21 alleles and 50 genotypes were observed in the 3 loci and the distributions of these genotypes were consistent with the law of Hardy-Weinberg equilibrium. The heterozygosity(H) of CSF1PO, TPOX and TH01 loci were 0.7287,0.5423 and 0.6904; the polymorphism information content(PIC) were 0.6805,0.4479 and 0.6426; the discrimination power(DP) were 0.8782,0.7361 and 0.8563 and the probabilities of paternity exclusion (PPE)were 0.6148、0.3643 and 0.5737 respectively. Conclution CSF1PO and THOX are highly genetic polymolphism, which is valuable for population genetic research and forensic individual identification. The distrbution of gene frequencies and their area of ethnic groups have parallel relation.

Objective To explore the distribution of ABO blood group in Tibetans population and their genetic relationship. Methods Data of ABO blood group of 28 Titetan populations were collected from China and India. The gene frequencies were processed by Phylip3. 68 and MEGA4. 1 genetic analysis software pack, and the Nei's genetic distance was imported and the genetic relationship was analyzed. Results The distribution of ABO blood group among Gansu, Qianghai, Sichuan, Yunnan, Tibet, and India was 0 ＞ A ＞ B ＞ AB. The nation index and genetic distance were 0. 63 ～ 0.98 and 0 ～0. 0072, respectively. Conclusion There is probable historical relationship among the ancestors of these Tibetan populations, but the differentiation incident of Tibetan population living in different area in history was different, so that their distribution of gene frequencies is diversified.

Objective This study was conducted to evaluate treatment-related toxicities,the patterns of failure,overall survival(OS)and progression-free survival(PFS)by comparing IFI with ENI in combination with chemotherapy. Methods Eligible patients were treated with concurrent chemoradiotherapy and randomized into either an IFI or ENI arm. The primary end points wereacute treatment-related toxicities. The secondary end points were patterns of failure,OS and PFS. Kaplan?Meier survival rate of the method for calculating the Logrank test difference method. Results Between April 2012 and October 2016,a total of 228 patients were enrolled from nine centers in china. Grade≥3,Grade≥2 radiation esophagitis and pneumonitis in the IFI arm were significantly lower than that of the ENI arm(P=0.018,0.027).No significant differences were observed in overall failure rates,loco-regional failure,distant failure rates,in-field and out-field lymph node failure between the two arms(P=0.401,0.561,0.510,0.561,0.681).The 1-,2-, 3-,4-yearand median OS in the ENI arm and IFI arm were 84.1%,57.3%,39.4%,31.6%,28 months and 83.6%,62.1%,44.5%,31.5%,32 months(P=0.654),respectively. The 1-,2-,3-yearand median PFS in the ENI arm and IFI arm were 71.9%,42.3%,32.7%,20 months and 70.1%,45.0%,35.9%,22 months (P=0.885),respectively. Conclusions Compared to ENI,IFI resulted in decreased radiation pneumonitis and esophagitis without sacrificing loco-regional lymph nodal control,PFS and OS in thoracic ESCC. Clinical Trial Registry Chinese Clinical trail registry,registration number:NCT01551589.