RHD*17.05 - RHD*DFR5
(ISBT table: RHD partial D v5.0)
This entry is an hybrid RHD allele.
DFR-5, RHD*D-CE(3-4)-D, RHD*D-CE(3-4)-D (DFR5, RHD*17.05), RHD-RHCE(3-4)-RHD,
Molecular data
Nucleotides:
361T>A; 380T>C; 383A>G; 455A>C; 505A>C; 509T>G; 514A>T; 544T>A; 577G>A; 594A>T; 602C>G;
Amino acids: L121M; V127A; D128G; N152T; M169L; M170R; I172F; S182T; E193K; K198N; T201R;
Hybrid allele encompassing at least one RHCE exon:
RHD-RHCE(3-4)-RHD
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: Aug. 13, 2020)Reports by D phenotype
Other RH phenotypes: RH:
Serology with monoclonal anti-D
- "reaction pattern matching the variant DFR", with ALBAclone advanced partial RhD typing kit
- 32 commercial monoclonal anti-D tested, "The epitope pattern of DFR-1, DFR-2, DFR-3 and DFR-5 was similar; antibody reactivity was weak or absent with clones specific for epD 1.2, 2.2, 5.4, 6.1, 6.4, 6.6, 8.1 and 8.2."
Antigen Density (Ag/RBC)
More phenotype data
Rhesus Similarity Index
Haplotype
Main CcEe phenotype association: ce? (last update: Aug. 13, 2020)Alloimmunization
Antibodies in carriers
Antibody specificity: D (RH1)
Summary: no published cases (last update: Aug. 13, 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 (last update: Aug. 13, 2020)Detailed reports
- 1 sample? reported by a German lab from Oldenburg (AM902714)
- 3 samples donors in the German (Southern) population
- 1/64 among 175000 donors, 64 had weak D phenotype and underwent molecular identification in the Greek population
- 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
Allele or phenotype frequency
Structure mapping
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References
- National Center for Biotechnology Information et al. Data from Genbank submission Online ressource, 1982. — Online ressource — [RHeference]
- L. Tilley et al. Five Novel RHD Alleles Resulting in D Variant Phenotypes Transfusion Medicine, 2009. — Abstract — [RHeference]
- von Zabern I et al. DFR-5 is a New Member in the DFR Family of Partial D and Has the Hybrid Structure RHD-CE(3-4)-D Transfus Med Hemother, 2012. — 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]
- 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]
- Floch A et al. Comment from Rheference Online ressource, 2020. — Online ressource — [RHeference]
Last update: Aug. 13, 2020