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Table 1 Summary of main study design differences between subjects

From: Safety and feasibility of apheresis to harvest and concentrate parasites from subjects with induced blood stage Plasmodium vivax infection

 

Subject 1

Subject 2

Subject 3

Subject 4#

Apheresis procedure

CMNC

CMNC

CMNC

Red cell depletion followed by CMNC on red cell depletion product

HCT layers sampled*

1%, 2%, 3%, 5%, 7%

1%, 2%, 3%, 5%, 7%

0.5%, 1%, 2%, 3%, 5%, 7%, 11%+ 2–3%, 5–7%, 1–7%

From the primary apheresis (HCT): Intermediate (64%)

From the secondary apheresis (HCT): Final (3%) Spare (5%) Waste (42%)

Apheresis timepoint

10

10

11 PM

11 AM

Mosquito feeding assay samples

Pre-apheresis (with-Percoll enrichment), 1%, 2%, 3% HCT layers

Pre-apheresis (with-Percoll enrichment)

Pre-apheresis (with and without-Percoll enrichment)

Pre-apheresis (without-Percoll enrichment), Intermediate, Final, Waste

Whole blood:citrate ratio during apheresis

15:1

8:1

8:1

13:1

Citrate added to apheresis collection bags

No

Yes

Yes

Yes

Biological duplicates*

No

No

Yes

Yes