Table 6. Samples with weak D phenotype... | American Society of Hematology

Table 6.

Samples with weak D phenotype and anti-D

Case	Sex	Phenotype	Anti-D (Titer)	Other Antibodies	Eluate^6-150	RHD Allele
RIR-1	female	ccDEe	1:2	none	positive	weak D type 2
RIR-5	female	ccDEE	1:1	none	negative	weak D type 15
RIR-6	male	CcDee	1:1	anti-E	positive	weak D type 1
RIR-11	female	ccDEe	1:4	anti-C	positive	weak D type 2
RIR-14	female	ccDee	1:128	none	NA^6-151	weak D type 4.2.2^6-152
RIR-15	male	ccDee	1:1	none	positive	weak D type 4.2.1^6-152

Case	Sex	Phenotype	Anti-D (Titer)	Other Antibodies	Eluate^6-150	RHD Allele
RIR-1	female	ccDEe	1:2	none	positive	weak D type 2
RIR-5	female	ccDEE	1:1	none	negative	weak D type 15
RIR-6	male	CcDee	1:1	anti-E	positive	weak D type 1
RIR-11	female	ccDEe	1:4	anti-C	positive	weak D type 2
RIR-14	female	ccDee	1:128	none	NA^6-151	weak D type 4.2.2^6-152
RIR-15	male	ccDee	1:1	none	positive	weak D type 4.2.1^6-152

F6-150

Red cell eluate tested for the presence of anti-D.

F6-151

NA, no red cells available for elution.

F6-152

Weak D type 4.2.2 differed from type 4.2.1 by a single silent mutation (Table 1). The encoded amino acid sequences were identical and may resemble DAR.27

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