RHD*17.01 - RHD*DFR1
(ISBT table: RHD partial D v5.0)
This entry is an RHD allele.
DFR (Ri.) (obsolete), DFR-1, RHD(M169L,M170R,I172F), RHD*494G, RHD*505A>C,509T>G,514A>T, RHD*505C,509G,514T (DFR1, RHD*17.01), RHD*D-CE(4:505-4:514)-D, RHD-RHCE(4:505-4:514)-RHD,
Molecular data
Nucleotides:
505A>C; 509T>G; 514A>T;
Amino acids: M169L; M170R; I172F;
Hybrid allele encompassing at least one RHCE exon:
no
Comments on the molecular basis:
- sometimes additional IVS5-38del4 with R1r phenotype
- recombination breakpoint characterization
- listed as DFR, assumed to be DFR-1 thanks to Figure 3
Extracellular position of one or more amino acid substitutions:
- none of the mutations are predicted to affect an extracellular amino acid
- mutations in the Rh vestibule
Splicing:
Unconventional prediction methods:
Phenotype
Main D phenotype: variable/discrepant (last update: May 4, 2020)Reports by D phenotype
Other RH phenotypes: RH:-2, -3, -4, -5, -23, -30, 50,
- RH:-2 inferred from the reported RHCE phenotypes of the carriers
- RH:-3 inferred from the reported RHCE phenotypes of the carriers
- RH:-4 inferred from the reported RHCE phenotypes of the carriers
- RH:-5 inferred from the reported RHCE phenotypes of the carriers
- RH:-23
- RH:-30
- RH:50 sample DFR(Ri.) Table 2
Serology with monoclonal anti-D
Antigen Density (Ag/RBC)
More phenotype data
Rhesus Similarity Index
Haplotype
Main CcEe phenotype association: Ce is the most frequent association, ce is less frequent (last update: Jan. 8, 2021)ce | Ce | cE | CE | |
---|---|---|---|---|
ce | 1 | 5 | 1 | 0 |
Ce | 0 | 0 | 0 | |
cE | 0 | 0 | ||
CE | 0 |
Reports by CcEe phenotype
- with ce 1 sample
- with ccEe 1 sample
- with Ce 0 samples (Table 2; no sample count, presented as a general association, the most frequent) (Figure 2; presented as a general association, no sample count) (see also "Additional comments" section on the RhesusBase http://www.rhesusbase.info/RHDDFR-1.htm)
- with Ccee 5 samples
- with cE 0 samples (Table 2; no sample count, presented as a general association, but less frequent) (Figure 2; presented as a general association, no sample count) (see also "Additional comments" section on the RhesusBase http://www.rhesusbase.info/RHDDFR-1.htm)
Reports by allele association
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: few descriptions (last update: May 2, 2020)Detailed reports
- 1 sample in French population (sample DFR(Ri.))
- 6 samples reported by a German lab from Ulm, Baden-Württemberg
- 1/1274540 among donors with D negative or weak D phenotype, or patients with weak D phenotype (44 partial D types detailed, 149 weak D types not detailed) Shanghai Chinese
- 1/163 selected variants included for the development of a genotyping assay mainly in the Dutch population (samples may have been included in other studies)
- 1 alleles in 226 patients SCD children systematically genotyped in an alloimmunization study in the USA population (Philadelphia)
- 1 heterozygote 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
- Rouillac C et al. Transcript analysis of D category phenotypes predicts hybrid Rh D-CE-D proteins associated with alteration of D epitopes. Blood, 1995. [Citation] [RHeference]
- Matassi G et al. Characterization of the recombination hot spot involved in the genomic rearrangement leading to the hybrid D-CE-D gene in the D(VI) phenotype. Am J Hum Genet, 1997. [Citation] [RHeference]
- Avent ND et al. The rhesus blood group system: insights from recent advances in molecular biology. Transfus Med Rev, 1999. [Citation] [RHeference]
- von Zabern I et al. IVS5-38del4 deletion in the RHD gene does not cause a DEL phenotype: relevance for RHD alleles including DFR-3. Transfusion, 2007. [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]
- Ye L et al. Partial D phenotypes and genotypes in the Chinese population. Transfusion, 2012. [Citation] [RHeference]
- Haer-Wigman L et al. RHD and RHCE variant and zygosity genotyping via multiplex ligation-dependent probe amplification. Transfusion, 2013. [Citation] [RHeference]
- Chou ST et al. High prevalence of red blood cell alloimmunization in sickle cell disease despite transfusion from Rh-matched minority donors. Blood, 2013. [Citation] [RHeference]
- Daniels G et al. Variants of RhD--current testing and clinical consequences. Br J Haematol, 2013. [Citation] [RHeference]
- Dezan MR et al. High frequency of variant RHD genotypes among donors and patients of mixed origin with serologic weak-D phenotype. J Clin Lab Anal, 2018. [Citation] [RHeference]
- Stef M et al. RH genotyping by nonspecific quantitative next-generation sequencing. Transfusion, 2020. [Citation] [RHeference]
- Floch A et al. Comment from Rheference Online ressource, 2020. — Online ressource — [RHeference]
Last update: Jan. 8, 2021