RHD*01W.33 - RHD*weak D type 33
(ISBT table: Weak D and Del v5.0)
This entry is an RHD allele.
RHD(V174M), RHD*520A, RHD*520A (weak D type 33), RHD*520G>A, weak D type 33,
Molecular data
Phenotype
Main D phenotype: weak D (last update: June 12, 2020)Reports by D phenotype
Other RH phenotypes: RH:-2, -3, -4,
Serology with monoclonal anti-D
Antigen Density (Ag/RBC)
More phenotype data
Rhesus Similarity Index
Haplotype
Main CcEe phenotype association: Ce is the most frequent association (last update: Jan. 8, 2021)ce | Ce | cE | CE | |
---|---|---|---|---|
ce | 0 | 1 | 1 | 0 |
Ce | 6 | 0 | 0 | |
cE | 0 | 0 | ||
CE | 0 |
Reports by CcEe phenotype
- with ccEe 1 sample
- with Ce 1 sample (2 samples also included in
- with Ccee 1 sample
2 samples (haplotype listed, not complete phenotype) (2 samples also included in
3 samples
0 samples (Figure 2; presented as a general association, no sample count)
Reports by allele association
Alloimmunization
Antibodies in carriers
Antibody specificity: D (RH1)
Summary: probably allo-anti-D (last update: May 16, 2020)Detailed information
-
D. Bruce et al. Transfusion Medicine (2011)
- Ab specificity: D (RH1)
- Number (auto- or allo-):
- Number listed as allo-: 1
- Number listed as auto-:
- Number of carriers of the allele assessed:
- DAT: negative
- Autologuous control: ND
- Elution: ND
- Autoadsorption: "the eluate after autoadsorbtion was negative by enzyme IAT"
- Titer: ND
- Was anti-LW excluded?: ND
- Other antibodies detected: none
- Cross matches (with Ab and RBCs from different partial types): ND
- Transfusion history: 4 D positive RBC units
- Pregnancy history:
- Anti-D Ig history: ND, probably none
- Context: ND
- Hemolytic consequences: ND
- Comment: anti-D reacted 2+ by IAT
-
Pham BN et al. Immunohematology (2013)
- Ab specificity: D (RH1)
- Number (auto- or allo-):
- Number listed as allo-:
- Number listed as auto-: 1
- Number of carriers of the allele assessed: 1
- DAT: negative
- Autologuous control: positive
- Elution: positive, anti-D
- Autoadsorption: anti-D was auto-adsorbed
- Titer: ND
- Was anti-LW excluded?: ND
- Other antibodies detected: ND
- Cross matches (with Ab and RBCs from different partial types): ND
- Transfusion history: ND
- Pregnancy history:
- Anti-D Ig history: ND
- Context: ND
- Hemolytic consequences: ND
- Comment: 1 auto-anti-D in 1 individual with this allele
-
Lambert MD et al. Vox Sanguinis (2015)
- Ab specificity: D (RH1)
- Number (auto- or allo-):
- Number listed as allo-: 1
- Number listed as auto-:
- Number of carriers of the allele assessed:
- DAT: negative
- Autologuous control: negative
- Elution: negative (no anti-D)
- Autoadsorption: ND
- Titer: 8 (IAT)
- Was anti-LW excluded?: ND
- Other antibodies detected: probably none
- Cross matches (with Ab and RBCs from different partial types): ND
- Transfusion history: unknown number of D positive RBC units
- Pregnancy history:
- Anti-D Ig history: ND, probably none
- Context: carcinoma
- Hemolytic consequences: ND
- Comment:
Antibodies in D negative recipients
Alloimmunization in recipients: expected to be possible, see phenotype data
Reports
Summary: several descriptions, in individuals of Eastern Asian descent, or compatible with such descent (last update: June 11, 2020)Detailed reports
- 1/7 donors with weak D phenotype Taiwanese
- 2/32 weak D or discordant between tube and IAT whithin a population of 305572 Chinese Han and minority donors Chinese Han
- 1/289 289 samples with ambiguous D phenotype (333 consecutive samples with ambiguous D phenotype studied but 44 were hybrid alleles, excluded from the study) in the French (Western France) population
- 2/201 (0 donors and 2 patients) among 201 samples with weak D expression, unclear D phenotype, or request for RHD typing within 44,743 donors and 8,604 patients tested in the Austrian population, Upper Austria
- 1/25 donors with "weak D or questionnable D status" explored by NGS to compare with Sanger sequencing in the Austrian population, Upper Austria
- 3/430 (1 heterozygous) among samples with ambigous D phenotype in the French population (Table S1)
- 1/748 among 748 individuals with D anomaly (weak or discrepant D phenotype or anti-D in individuals with D positive phenotype), 459 had D variants "that could be named weak D" (including alleles RHef00313, RHef00317 and RHef00318, as well as RHef00197 and RHef00283), 138 had partial D, 65 had no variant, 86 were not persued further (two variant alleles or incomplete or pending analysis) in the French population
- 2/2493 donors with apparent D negative phenotype (108/2493 were in fact weak D or DEL) Han Chinese (Shanxi Province, Central China)
- 1/32 donors suspected to have weak D or partial D phenotypes sent to a reference laboratory Chinese (Zhejiang Han)
-
2/45 among 763408 donors, after ruling out partial D phenotypes by using 5 monoclonal anti-D, 75 were considered weak D phenotype and 45 were genotyped Japanese
(2 samples in common with
27183894 ) -
4/226 226 donors considered weak D phenotype, after ruling out partial D phenotypes by using 5 monoclonal anti-D Japanese
(2 samples in common with
26340140 ) - 1/100 donors with weak D phenotype Australia
- 1/62 D variant donors Chinese, Southern Han
- 4/129 (2 hemizygous, 1 heterozygous with RHef00448, 1 with RHef00104) donors with weak D phenotype Thai
- 1 hemizygote among 278 samples selected for the development of nonspecific quantitative next-generation sequencing. (non-random samples, may have been reported in other studies)
Allele or phenotype frequency
Structure mapping
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References
- International Society of Blood Transfusion et al. International Society of Blood Transfusion (ISBT) allele table Online ressource, 1935. — Online ressource — [RHeference]
- Lin IL et al. Molecular basis of weak D in Taiwanese. Ann Hematol, 2003. [Citation] [RHeference]
- Yan L et al. Molecular basis of D variants in Chinese persons. Transfusion, 2007. [Citation] [RHeference]
- Le Maréchal C et al. Identification of 12 novel RHD alleles in western France by denaturing high-performance liquid chromatography analysis. Transfusion, 2007. [Citation] [RHeference]
- Polin H et al. Effective molecular RHD typing strategy for blood donations. Transfusion, 2007. [Citation] [RHeference]
- Flegel WA et al. D variants at the RhD vestibule in the weak D type 4 and Eurasian D clusters. Transfusion, 2009. [Citation] [RHeference]
- Stabentheiner S et al. Overcoming methodical limits of standard RHD genotyping by next-generation sequencing. Vox Sang, 2011. [Citation] [RHeference]
- D. Bruce et al. Immune Alloanti-D in a Patient With Weak D Type 33 Genotype Transfusion Medicine, 2011. — Abstract — [RHeference]
- Pham BN et al. Molecular analysis of patients with weak D and serologic analysis of those with anti-D (excluding type 1 and type 2). Immunohematology, 2013. [Citation] [RHeference]
- Fichou Y et al. Establishment of a medium-throughput approach for the genotyping of RHD variants and report of nine novel rare alleles. Transfusion, 2013. [Citation] [RHeference]
- Ye SH et al. A comprehensive investigation of RHD polymorphisms in the Chinese Han population in Xi'an. Blood Transfus, 2014. [Citation] [RHeference]
- He J et al. Molecular basis and zygosity determination of D variants including identification of four novel alleles in Chinese individuals. Transfusion, 2015. [Citation] [RHeference]
- Lambert MD et al. The second example of alloanti-D in a weak D type 33 individual Vox Sanguinis, 2015. — Abstract — [RHeference]
- Ogasawara K et al. Weak D alleles in Japanese: a c.960G>A silent mutation in exon 7 of the RHD gene that affects D expression. Vox Sang, 2016. [Citation] [RHeference]
- Isa K et al. Prevalence of RHD alleles in Japanese individuals with weak D phenotype: Identification of 20 new RHD alleles. Vox Sang, 2016. [Citation] [RHeference]
- McGowan EC et al. Diverse and novel RHD variants in Australian blood donors with a weak D phenotype: implication for transfusion management. Vox Sang, 2017. [Citation] [RHeference]
- Ji YL et al. RHD genotype and zygosity analysis in the Chinese Southern Han D+, D- and D variant donors using the multiplex ligation-dependent probe amplification assay. Vox Sang, 2017. [Citation] [RHeference]
- Schoeman EM et al. Targeted exome sequencing defines novel and rare variants in complex blood group serology cases for a red blood cell reference laboratory setting. Transfusion, 2018. [Citation] [RHeference]
- Floch A et al. Comment from Rheference Online ressource, 2020. — Online ressource — [RHeference]
- Thongbut J et al. Comprehensive Molecular Analysis of Serologically D-Negative and Weak/Partial D Phenotype in Thai Blood Donors. Transfus Med Hemother, 2020. [Citation] [RHeference]
- Stef M et al. RH genotyping by nonspecific quantitative next-generation sequencing. Transfusion, 2020. [Citation] [RHeference]
Last update: Jan. 8, 2021