RHD*01W.90 - RHD*weak D type 90
(ISBT table: Weak D and Del v5.0)
This entry is an RHD allele.
RHD(N331K), RHD*993C>G, RHD*993G, RHD*993G (weak D type 90), weak D type 90,
Molecular data
Phenotype
Main D phenotype: variable/discrepant (last update: Nov. 17, 2019)Reports by D phenotype
Other RH phenotypes: RH:-3,
- RH:-3 inferred from the reported RHCE phenotypes of the carriers
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: Nov. 17, 2019)Detailed information
Antibodies in D negative recipients
Alloimmunization in recipients: expected to be possible, see phenotype data
Reports
Summary: rare descriptions, in Africans or possible African descent (last update: Dec. 22, 2019)Detailed reports
- 1/25 among 25 donor and prenatal patient samples from different countries with discrepancies between targeted genotyping and serology Black
- 3/351 out of 351 prenatal patients with discrepant D phenotyping results (population tested 608486 patients) Canada
- 1/100 donors with weak D phenotype Australia
- 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]
- C M Westhoff et al. A Weak D Phenotype Discovered in Nine Patients in Western Canada due to a Nucleotide 1187C>G (Pro396Arg) Change in RHD Transfusion, 2014. — Abstract — [RHeference]
- Garcia F et al. New RHD variant alleles. Transfusion, 2015. [Citation] [RHeference]
- Clarke G et al. Resolving variable maternal D typing using serology and genotyping in selected prenatal patients. Transfusion, 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]
- 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]
Last update: Jan. 8, 2021