RHD*01W.122 - RHD*weak D type 122
(ISBT table: Weak D and Del v5.0)
This entry is an RHD allele.
RHD(R70W), RHD*208C>T, RHD*208T, RHD*208T (weak D type 122), weak D type 122,
Molecular data
Phenotype
Main D phenotype: weak D (last update: Aug. 9, 2020)Reports by D phenotype
Other RH phenotypes: RH:-3, -4,
Serology with monoclonal anti-D
Antigen Density (Ag/RBC)
More phenotype data
Rhesus Similarity Index
Haplotype
Main CcEe phenotype association: Ce (last update: Jan. 8, 2021)Alloimmunization
Antibodies in carriers
Antibody specificity: D (RH1)
Summary: no published cases (last update: Aug. 9, 2020)Detailed information
Antibodies in D negative recipients
Alloimmunization in recipients: expected to be possible, see phenotype data
Reports
Summary: few descriptions, in various populations, allele could be of Indian and/or Japanese descent (last update: Aug. 9, 2020)Detailed reports
- 1/806 consecutive samples with ambiguous D phenotype in the French population (Western France)
- 1/226 226 donors considered weak D phenotype, after ruling out partial D phenotypes by using 5 monoclonal anti-D Japanese
- 1/223 donors with D negative phenotype initially, found to have D antigen expression (67 of the 223 samples of the cohort) or samples referred with discrepant or weak D typing, or discrepancies with previous typings, or anti-D in D positive individuals (156 of the 223 samples of the cohort) in the Indian population
- 5/129 (4 hemizygous, 1 heterozygous with RHef00122) donors with weak D phenotype Thai
- 1/185 RH:–1,–4 or RH:–1,–5 recipients reported by a French lab
- 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]
- Fichou Y et al. Variant screening of the RHD gene in a large cohort of subjects with D phenotype ambiguity: report of 17 novel rare alleles. Transfusion, 2012. [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]
- Jérôme Babinet et al. Erratum à l’article : « Résumés des Posters » [Transfus. Clin. Biol. 24 (2017) 3S] Transfusion Clinique et Biologique, 2018. — Abstract — [RHeference]
- Fichou Y et al. Molecular basis of weak D expression in the Indian population and report of a novel, predominant variant RHD allele. Transfusion, 2018. [Citation] [RHeference]
- Floch A et al. Comment from Rheference Online ressource, 2020. — Online ressource — [RHeference]
- Stef M et al. RH genotyping by nonspecific quantitative next-generation sequencing. Transfusion, 2020. [Citation] [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]
Last update: Jan. 8, 2021