Identification of two novel alleles, HLA-A*02:01:193 and -DQA1*02:17, in Greek individuals

Identification by NGS of two novel alleles, HLA-A*02:01:193 and -DQA1*02:17, in Greek individuals.

Recognition of HLA-B*15:35 and its associated HLA haplotype

One nucleotide substitution in codon 97 of HLA-B*15:01:01:01 results in a novel allele, HLA-B*15:35.

Identification of the novel HLA-DPB1*1149:01

The new allele HLA-DPB1*1149:01 differs from HLA-DPB1*09:01:01 by one nucleotide substitution in Exon 4.

Discovery of the novel HLA-B*46:87 allele in a Taiwanese patient

Four nucleotide substitutions in exon 3 of HLA-B*46:01:01:01 result in a novel allele, HLA-B*46:87.

HLA-A*11:77, a variant of HLA-A*11, detected in a Taiwanese patient

One nucleotide substitution in codon 268 of HLA-A*11:02:01:01 results in a novel allele, HLA-A*11:77.

A novel HLA class I allele: HLA-A*24:241

The HLA-A*24:241 allele differs from A*24:02:01:01 by one nucleotide substitution at position 319.

Characterization of the novel HLA-B*52:02:02 allele

The HLA-B*52:02:02 allele differs from B*52:02:01 by one nucleotide substitution at positions 141.

Identification of a novel HLA-B*40 allele, HLA-B*40:468, by next-generation sequencing in a Chinese individual

HLA-B*40:468 showed one nucleotide difference compared to HLA-B*40:06:01:01 at position 80 (A > C) Histidine to Proline residue 3.

Detection of a novel HLA-B allele, HLA-B*55:71, in a Chinese hematopoietic stem cell donor and platelet donor

HLA-B*55:71 has one nucleotide change from HLA-B*55:02:01:01 where histidine (3) is changed to tyrosine.

A novel HLA-B*13 variant, HLA-B*13:146, identified by next-generation sequencing in a Chinese individual

HLA-B*13:146 has two nucleotide changes from HLA-B*13:01:01:01 in exon 3.

A novel HLA-A*24 allele, HLA-A*24:512, identified by next-generation sequencing in a Chinese individual

The new allele HLA-A*24:512 showed one nucleotide difference compared to A*24:02:01:01 at position 548 (A > G).

Hemizygous amplification and complete Sanger sequencing of HLA-C*07:37:01:02 from a South European Caucasoid

The novel C*07:37:01:02 was completely sequenced after haplo-specific amplification from a European Caucasoid carrying B*07:02.

Detection of two novel alleles, HLA-A*02:943 and -B*51:104:02, in Greek cord blood units

The new alleles A*02:943 and B*51:104:02 were detected in Greek cord blood units.

Distribution of Virulence Genes and Sequence-Based Types Among Legionella pneumophila Isolated From the Water Systems of a Tertiary Care Hospital in India

Background: Legionnaires' disease (LD) is a potentially fatal pneumonia predominantly caused by infection due to Legionella pneumophila although more than 50 other Legionella species are described. Water systems contaminated with Legionella spp. are the implicated sources of Legionnaires' disease. In this study, we aimed to assess Legionella contamination in the water sources of a tertiary care hospital and to determine the virulence properties and molecular characteristics of L. pneumophila environmental isolates.

Methods: During May 2015 through August 2018, a total of 201 hospital water samples were tested for L. pneumophila by standardized culture procedures; environmental isolates were examined for the presence of two virulence genes: Legionella vir homolog (lvh) and repeats in structural toxin (rtxA) by PCR. The genotyping of isolates was performed by sequence-based typing (SBT) according to the protocol of the European Study Group for Legionella Infections (ESGLI).

Results:L. pneumophila was isolated from 38/201 (18.9%) water samples; among the 46 isolates, the lvh locus was present in 45 (97.8%), the rtxA locus was found in 45 (97.8%), and both loci were found in 44 (95.7%) isolates. A total of 23 sequence types (STs) were identified among the 44 isolates (index of discrimination [IOD] of 0.929), and 11/23 (47.8%) STs were new to the ESGLI database.

Conclusions: The study results showed genetic diversity in L. pneumophila isolates from the hospital environment along with a high percentage of pathogenicity loci. Besides, certain STs may have an increased ability to cause legionellosis, thus requires specific infection control and prevention strategies whenever identified.

A novel variant of HLA-C*12, HLA-C*12:130, detected in a Taiwanese individual

One nucleotide substitution in codon 40 of HLA-C*12:02:01 results in a novel allele, HLA-C*12:130.

Discovery of the HLA-DRB1*14:227 allele, a variant of HLA-DRB1*14, in a Taiwanese bone marrow donor

One nucleotide substitution at nucleotide 594 of HLA-DRB1*14:54:01:01 results in a novel allele, HLA-DRB1*14:227.

Genomic full-length sequence of the HLA-B*44:127 allele was identified in a Chinese bone marrow donor

Genomic full-length sequence of HLA-B*44:127 was identified in a Chinese individual by sequence-based typing.

The HLA-DRB1*11:23:02 allele confirmed in a Chinese individual by next-generation sequencing

DRB1*11:23:02 differs from DRB1*11:23:01 by one nucleotide change at nucleotide 357 in exon 2 from G to A.

Identification of an HLA-B*40:01:01:01 variant, HLA-B*40:33, in a Taiwanese individual

One nucleotide substitution at codon 114 of HLA-B*40:01:01 results in a novel allele, HLA-B*40:33.

HLA-A*11:263 is found on the haplotype: HLA-A*11:263-C*03:04:01-B*13:01

HLA-A*11:263 on the haplotype HLA-A*11:263-C*03:04:01-B*13:01.

Detection of the HLA-A*33:146 allele in a Taiwanese individual

One nucleotide substitution in codon 307 of HLA-A*33:03:01:01 results in a novel allele, HLA-A*33:146.

Identification of the novel HLA-A*02:406 allele in a Chinese individual

HLA-A*02:406 was initially identified in a volunteer donor for China Marrow Donor Program.

Recognition of an HLA-C*03:04:01:01 variant, HLA-C*03:04:37, in a Taiwanese individual

One nucleotide substitution in codon 81 of HLA-C*03:04:01:01 results in a novel allele, HLA-C*03:04:37.

Genomic full-length sequence of the HLA-A*11:264 allele was identified in a Chinese bone marrow donor

Genomic full-length sequence of HLA-A*11:264 was identified in a Chinese individual by sequence-based typing.

HLA-A*02:411 identified in a platelet donor from China

HLA-A*02:411 differs from HLA-A*02:01:01:01 at nucleotides 770 and 771, where Threonine (T) replaces Isoleucine (I) at residue 233.

Detection of HLA-B*48:50 in a Chinese individual

HLA-B*48:50 differs from HLA-B*48:01:01 (467C->A, S132Y).

HLA-DPB1*526:01 detected in two Singaporean Indian individuals

One nucleotide substitution in codon 84 of HLA-DPB1*02:01:02:01 results in a novel allele, HLA-DPB1*526:01.

A new HLA-C allele, HLA-C*07:02:83, identified in a Chinese family

HLA-C*07:02:83 differs from HLA-C*07:02:01:01 (387C- > A, P105P).

HLA-DQB1*05:05:02, an HLA-DQB1*05:05 variant, identified in a Taiwanese individual

One nucleotide substitution in codon 38 of HLA-DQB1*05:05:01 results in a novel allele, HLA-DQB1*05:05:02.

Characterization of the novel HLA-B*46:41N allele

The HLA-B*46:41N allele differs from B*46:01:01:01 by a 13 nucleotides deletion at positions 275-287.

Detection of an HLA-DRB1*14 variant, HLA-DRB1*14:44:01, in a Taiwanese individual

Nucleotide substitutions in codon of HLA-DRB1*14:05:01:01 result in a novel allele HLA-DRB1*14:44:01.

Detection of HLA-C*14:20 in a Taiwanese individual

Two nucleotide substitutions in codon 163 of HLA-C*14:02:01:01 result in a novel allele, HLA-C*14:20.

The HLA-DRB1*04:68 allele recognized in a Taiwanese individual

Nucleotide substitution in codon 37 of HLA-DRB1*04:04:01 results in a new allele, HLA-DRB1*04:68.

Detection of HLA-C*12:109, an HLA-C*12 variant, in a Taiwanese hematopoietic stem cell donor

Nucleotide replacement in codon 194 of HLA-C*12:03:01:01 results in a novel allele, HLA-C*12:109.

Identification of a novel HLA-B*40 allele, HLA-B*40:451

HLA-B*40:451 differs from B*40:06:01:01 by a single nucleotide substitution at position 257 of exon 2.

HLA-C*07:154, an HLA-C*07 variant, detected in a Taiwanese blood donor

One nucleotide replacement in codon 161 of HLA-C*07:02:01:01 results in a novel allele, HLA-C*07:154.

Detection of an HLA-A*02 variant, HLA-A*02:611, in a Singaporean Chinese individual

One nucleotide replacement in codon 13 of HLA-A*02:01:01:01 results in a novel allele, HLA-A*02:611.

Detection of an HLA-C*03 variant, HLA-C*03:85, in a Taiwanese individual

One nucleotide substitution at residue 68 of HLA-C*03:03:01:01 results in a novel allele, HLA-C*03:85.

Detection of an HLA-A*30 variant, HLA-A*30:114, in a Taiwanese individual

One nucleotide substitution in codon 219 of HLA-A*30:01:01:01 results in a novel allele, HLA-A*30:114.

Detection of an HLA-DRB1*14 variant, HLA-DRB1*14:141, in a Taiwanese individual

Nucleotide substitutions in 14 codons of HLA-DRB1*14:03:01 result in a novel allele HLA-DRB1*14:141.

The novel HLA-B*58:118 allele was identified during high-resolution HLA typing

HLA-B*58:118 differs from HLA-B*58:01:01:01 by one nucleotide exchange at position 556(G>A) with an amino exchange.

Discovery of the novel HLA allele, HLA-A*30:72, in a Chinese platelet donor by sequence-based typing

HLA-A*30:72 has one nucleotide change from HLA-A*30:01:01:01 where isoleucine (95) is changed to threonine.

Identification of a novel allele, HLA-B*52:01:24, by sequence-based typing in a Chinese individual

HLA-B*52:01:24 has one synonymous nucleotide change from HLA-B*52:01:01:01 at nucleotide 384 (codon 104 Glycine).

Detection of an HLA-B*15 variant, HLA-B*15:109, in a Taiwanese individual

One nucleotide replacement in codon 43 of HLA-B*15:27:01 results in a new allele, HLA-B*15:109.

A novel HLA-A*33 allele, HLA-A*33:131, identified by sequencing-based typing

The novel allele HLA-A*33:131 was identified in a Chinese individual using the sequencing-based typing method.

HLA-DQB1*03:13 identified in two unrelated Taiwanese individuals

One nucleotide substitution in codon 67 of HLA-DQB1*03:01:01:01 results in a new allele, HLA-DQB1*03:13.

Detection of HLA-C*07:27:01 in a Taiwanese individual

One nucleotide replacement in codon 99 of the HLA-C*07:02:01:01 results in a novel allele, HLA-C*07:27:01.

HLA-DQB1*04:02:13, an HLA-DQB1*04:02 variant, identified in a Kuwaiti individual

One nucleotide substitution in codon 213 of HLA-DQB1*04:02:01:01 results in a new allele, HLA-DQB1*04:02:13.

Recognition of HLA-C*03:36 allele in a Taiwanese individual

Nucleotide substitutions in codons 152 and 276 of HLA-C*03:02:01 result in a novel allele, HLA-C*03:36.