RHD*01W.91 - RHD*weak D type 91
(ISBT table: Weak D and Del v5.0)
This entry is an RHD allele.
RHD(P396R), RHD*1187C>G, RHD*1187G, RHD*1187G (weak D type 91), weak D type 91,
Molecular data
Phenotype
Main D phenotype: variable/discrepant (last update: Dec. 28, 2020)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: Dec. 28, 2020)Detailed information
Antibodies in D negative recipients
Alloimmunization in recipients: expected to be possible, see phenotype data
Reports
Summary: several descriptions, in the North American population (last update: Dec. 28, 2020)Detailed reports
- 1/25 among 25 donor and prenatal patient samples from different countries with discrepancies between targeted genotyping and serology (may overlap with other studies)
- 10/351 out of 351 prenatal patients with discrepant D phenotyping results (population tested 608486 patients) Canada (may overlap with other studies)
- 1/353 samples referred for discrepant or weak D typing in the USA population
- 5 samples in the Canadian population (Northern Alberta) (may overlap with other studies)
- 3 samples reported by a USA laboratory (may overlap with other studies)
- 1 sample in Winnipeg was of French-Canadian Metis background (may overlap with other studies)
- 5/66 D typing discrepancies sent for genotyping from prenatal patients in the Canadian population (Northern Alberta) (may overlap with other studies)
- 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]
- S Vege et al. RHD Genotyping of Discrepant or Weak D Samples: Over a Year’s Experience. Transfusion, 2017. — Abstract — [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]
- Vege S et al. Impact of RHD genotyping on transfusion practice in Denmark and the United States and identification of novel RHD alleles. Transfusion, 2021. [Citation] [RHeference]
Last update: Jan. 8, 2021