Table 5. CXCR4 expression at the protein and mRNA levels and overall survival in TC, ATC and SCLC.

Immunohistochemistry TC
IRS 0–12	N = 22	Events	Median survival [months]
IRS 0–4	N=21	1	86.2
IRS 5–12	N=1	0	77.2
CXCR4-mRNA Quartiles TC
PCR Quartiles 0–3 (ΔCT values)	N=19	Events	Median survival [months]
0 (26.00–29.49)	N=1	0	126.2
1 (29.50–32.99)	N=4	0	90.7
2 (33.00–36.49)	N=10	0	80.7
3 (36.50–40.00)	N=4	1	77.7
CXCR4-Immunohistochemistry ATC
IRS 0–12	N=27	Events	Median survival [months]
IRS 0–4	N=23	7	96.2
IRS 5–12	N=4	1	62.1
CXCR4-mRNA Quartiles ATC
PCR Quartiles 0–3 (ΔCT values)	N=19	Events	Median survival [months]
2 (33.00–36.49)	N=12	2	100.7
3 (36.50–40.00)	N=7	2	69.2
CXCR4-Immunohistochemistry SCLC
IRS 0–12	N=21	Events	Median survival [months]
IRS 0–4	N=3	2	90.7
IRS 5–12	N=18	16	17.9
CXCR4-mRNA Quartiles SCLC
PCR Quartiles 0–3 (ΔCT values)	N=18	Events	Median survival [months]
2 (33.00–36.49)	N=2	2	63.0
3 (36.50–40.00)	N=16	13	17.9