Table 1. Kinetics of WBC, HHV-6 viral... | American Society of Hematology

Table 1.

Kinetics of WBC, HHV-6 viral load, and PB host chimerism

	Days post-HSCT	WBC count, k/mL	HHV-6 viral load, ×10³ copies/mL WB	PB chimerism by FISH, XX cells/total cells (% host chimerism)	HHV-6 viral load (×10³ copies/mL WB)/WBC count (k/mL)
Peritransplant period*	−15	100	559		5.59
	−9	200	210		1.05
	−1	200	170		0.85
	3	400	393		0.98
	10	200	216		1.08
Early posttransplant period†	32	3800		10/300 (3.3)
	98	4900	131	8/200 (4)	0.027
	105	6400	85	7/400 (1.7)	0.013
	126	7000	150		0.021
	133	6900		4/200 (2)
Late posttransplant period‡	290	6600		0/200 (0)
	360	5000	1.6	0/200 (0)	0.0003
	374	4000	1.4		0.0004
	399	5100	<0.5		<0.0001
	430	3900		0/200 (0)

	Days post-HSCT	WBC count, k/mL	HHV-6 viral load, ×10³ copies/mL WB	PB chimerism by FISH, XX cells/total cells (% host chimerism)	HHV-6 viral load (×10³ copies/mL WB)/WBC count (k/mL)
Peritransplant period*	−15	100	559		5.59
	−9	200	210		1.05
	−1	200	170		0.85
	3	400	393		0.98
	10	200	216		1.08
Early posttransplant period†	32	3800		10/300 (3.3)
	98	4900	131	8/200 (4)	0.027
	105	6400	85	7/400 (1.7)	0.013
	126	7000	150		0.021
	133	6900		4/200 (2)
Late posttransplant period‡	290	6600		0/200 (0)
	360	5000	1.6	0/200 (0)	0.0003
	374	4000	1.4		0.0004
	399	5100	<0.5		<0.0001
	430	3900		0/200 (0)

Peritransplant period is defined as the interval between pretransplant and early post-HSCT before donor myeloid engraftment.

Early posttransplant period is defined as the post-HSCT interval after donor myeloid engraftment and before full donor PB chimerism was established.

Late posttransplant period is defined as the post-HSCT interval after full donor PB chimerism.