RHD*09.01.01 - RHD*DAR1.01
(ISBT table: RHD partial D v5.0)
This entry is an RHD allele.
DAR1.1, RHD(T201R,F223V,I342T), RHD(T201R,F223V,V319V,I342T), RHD*602C>G,667T>G,957G>A,1025T>C, RHD*602G,667G,957A,1025C, RHD*602G,667G,957A,1025C (weak D type 4.2.1, DAR1.01), weak D type 4.2.1,
Molecular data
Nucleotides:
602C>G; 667T>G; 957G>A; 1025T>C;
Amino acids: T201R; F223V; V319V; I342T;
Hybrid allele encompassing at least one RHCE exon:
no
Comments on the molecular basis:
- see also "Additional comments" section on the RhesusBase http://www.rhesusbase.info/RHDweakDtype4.2.1.htm
Extracellular position of one or more amino acid substitutions:
Splicing:
Unconventional prediction methods:
Phenotype
Main D phenotype: weak D (last update: April 28, 2020)Reports by D phenotype
Other RH phenotypes: RH:-2, -3,
Serology with monoclonal anti-D
Antigen Density (Ag/RBC)
More phenotype data
Rhesus Similarity Index
Haplotype
Main CcEe phenotype association: ce (last update: Aug. 15, 2020)ce | Ce | cE | CE | |
---|---|---|---|---|
ce | 0 | 1 | 0 | 0 |
Ce | 0 | 0 | 0 | |
cE | 0 | 0 | ||
CE | 0 |
Reports by CcEe phenotype
Reports by allele association
Alloimmunization
Antibodies in carriers
Antibody specificity: D (RH1)
Summary: no published cases (last update: Nov. 17, 2019)Detailed information
-
Wagner FF et al. Blood (2000)
- Ab specificity: D (RH1)
- Number (auto- or allo-):
- Number listed as allo-:
- Number listed as auto-: 1
- Number of carriers of the allele assessed:
- DAT:
- Autologuous control:
- Elution: positive: anti-D
- Autoadsorption:
- Titer: 1
- Was anti-LW excluded?:
- Other antibodies detected: none
- Cross matches (with Ab and RBCs from different partial types):
- Transfusion history:
- Pregnancy history:
- Anti-D Ig history:
- Context:
- Hemolytic consequences:
- Comment:
Wagner FF et al. Transfus Med Hemother (2014) (RIR n°15)
-
Noizat-Pirenne F et al. Transfus Clin Biol (2011)
(review)
- Ab specificity: D (RH1)
- Number (auto- or allo-):
- Number listed as allo-: no new case detailed (listed as allo-anti-D)
- Number listed as auto-: NA
- Number of carriers of the allele assessed: NA
- DAT: NA
- Autologuous control: NA
- Elution: NA
- Autoadsorption: NA
- Titer: NA
- Was anti-LW excluded?: NA
- Other antibodies detected: NA
- Cross matches (with Ab and RBCs from different partial types): NA
- Transfusion history: NA
- Pregnancy history:
- Anti-D Ig history: NA
- Context: NA
- Hemolytic consequences: NA
- Comment: list of D variants associated with alloanti-D formation
Antibodies in D negative recipients
Alloimmunization in recipients: expected to be possible, see phenotype data
Reports
Summary: few descriptions, mainly in individuals of African descent, or compatible with such descent (last update: Dec. 9, 2020)Detailed reports
- 1/10 (heterozygous with RHef00008) individuals with D positive phenotype Bantu, subgroup Teke, Kukuya from villages around Djambala city
- 1/64 among 175000 donors, 64 had weak D phenotype and underwent molecular identification in the Greek population
- 7/273 donors with weak D phenotype in the Brazilian population
Allele or phenotype frequency
Structure mapping
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Slab | Ctrl+Second | Not Available |
References
- International Society of Blood Transfusion et al. International Society of Blood Transfusion (ISBT) allele table Online ressource, 1935. — Online ressource — [RHeference]
- Wagner FF et al. Weak D alleles express distinct phenotypes. Blood, 2000. [Citation] [RHeference]
- Wagner FF et al. The DAU allele cluster of the RHD gene. Blood, 2002. [Citation] [RHeference]
- 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]
- Touinssi M et al. Molecular analysis of inactive and active RHD alleles in native Congolese cohorts. Transfusion, 2009. [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]
- Wagner FF and Flegel WA et al. The Human RhesusBase Online ressource, 2011. — Online ressource — [RHeference]
- Noizat-Pirenne F et al. Relevance of RH variants in transfusion of sickle cell patients. Transfus Clin Biol, 2011. [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]
- Wagner FF et al. The Rhesus Site. Transfus Med Hemother, 2014. [Citation] [RHeference]
- Srivastava K et al. The DAU cluster: a comparative analysis of 18 RHD alleles, some forming partial D antigens. Transfusion, 2016. [Citation] [RHeference]
- Koutsouri T et al. Frequency distribution of RHD alleles among Greek donors with weak D phenotypes demonstrates a distinct pattern in central European countries. Transfus Med, 2019. [Citation] [RHeference]
- Arnoni CP et al. Correlation among automated scores of agglutination, antigen density by flow cytometry and genetics of D variants. Transfus Apher Sci, 2019. [Citation] [RHeference]
- Floch A et al. Comment from Rheference Online ressource, 2020. — Online ressource — [RHeference]
Last update: Dec. 9, 2020