RHD*09.02.01 - RHD*DAR2.01
(ISBT table: RHD partial D v5.0)
This entry is an RHD allele.
DAR2.1, DARA, DARE, RHD(T201R,F223V,E233Q,I342T), RHD(T201R,F223V,E233Q,S248S,V319V,I342T), RHD*602C>G,667T>G,697G>C,744C>T,957G>A,1025T>C, RHD*602G,667G,697C,744T,957A,1025C, RHD*602G,667G,697C,744T,957A,1025C (DAR2.01),
Molecular data
Nucleotides:
602C>G; 667T>G; 697G>C; 744C>T; 957G>A; 1025T>C;
Amino acids: T201R; F223V; E233Q; S248S; V319V; I342T;
Hybrid allele encompassing at least one RHCE exon:
no
Comments on the molecular basis:
Extracellular position of one or more amino acid substitutions:
Splicing:
Unconventional prediction methods:
Phenotype
Main D phenotype: variable/discrepant (last update: June 12, 2020)Reports by D phenotype
- Undetailed ambiguous D phenotype
- "weak/partial" phenotype but heterozygous with RHef00122
- Discrepant D phenotype (negative or positive depending on anti-D reagents and techniques)
- "weak/partial" phenotype but heterozygous with RHef00122
Other RH phenotypes: RH:-2, -3,
Serology with monoclonal anti-D
Antigen Density (Ag/RBC)
- 1363 and 1602 Ag/RBC, 1 sample with 2 monoclonal anti-D (a third monoclonal anti-D gave results comparable with negative control)
- 1170 and 1478 Ag/RBC, 1 sample with 2 monoclonal anti-D (a third monoclonal anti-D gave results comparable with negative control)
- 831 and 986 Ag/RBC, 1 sample with 2 monoclonal anti-D (a third monoclonal anti-D gave results comparable with negative control)
More phenotype data
Rhesus Similarity Index
Haplotype
Main CcEe phenotype association: ce (last update: Aug. 15, 2020)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: several descriptions, mainly in individuals of African descent, or compatible with such descent (last update: June 12, 2020)Detailed reports
- 11/42 (+1 heterozygous with RHef00317) among 42 samples typed DAR by molecular typing samples from several West European laboratories
- 12/104 (prevalence among weak D phenotype) or 12/21353 (phenotypic prevalence in population) 104 with weak D phenotype were genotyped in a cohort of 21353 pregnant women admixed Brazilian
- 1/129 (heterozygous with RHef00122) donors with weak D phenotype Thai
Allele or phenotype frequency
Structure mapping
Movement | Mouse Input | Touch Input | ||
---|---|---|---|---|
Rotation | Primary Mouse Button | Single touch | ||
Translation | Middle Mouse Button or Ctrl+Primary | Triple touch | ||
Zoom | Scroll Wheel or Second Mouse Button or Shift+Primary | Pinch (double touch) | ||
Slab | Ctrl+Second | Not Available |
References
- Grootkerk-Tax MG et al. RHD(T201R, F223V) cluster analysis in five different ethnic groups and serologic characterization of a new Ethiopian variant DARE, the DIII type 6, and the RHD(F223V). Transfusion, 2006. [Citation] [RHeference]
- Lejon Crottet S et al. Serologic and molecular investigations of DAR1 (weak D Type 4.2), DAR1.2, DAR1.3, DAR2 (DARE), and DARA. Transfusion, 2013. [Citation] [RHeference]
- Bub CB et al. RHD alleles among pregnant women with serologic discrepant weak D phenotypes from a multiethnic population and risk of alloimmunization. J Clin Lab Anal, 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]
Last update: June 21, 2020