Table 2.
Variables measured before and during treatment and impact on OS, DFS and LC, (p < 0.05*); Spearman Rank Correlation with time to event or censoring
| Variable | No. of patients | Median/range | pOS | R Spearman |
OS Above/below median (mts) | pLC | R Spearman |
LC Above/below median (mts) |
pDFS | R Spearman |
DFS Above/below median (mts) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| VCT | 33 | 26.5 (0.2–174.3) | 0.05 | −0.316 | 15.5/39 | 0.01a | −0.407 | 10/35 | 0.007a | −0.461 | 9.5/25 |
| VCT1 14 Gy | 26 | 18.8 (0–74.8) | 0.13 | −0.301 | 14/32 | 0.04a | −0.413 | 8/24 | 0.13 | −0.323 | 8/25 |
| VCT2 28 Gy | 24 | 12.6 (0–68.9) | 0.03a | −0.44 | 13/36 | 0.03a | −0.463 | 6.5/31 | 0.007a | −0.611 | 6.5/31.5 |
| VCT3 36 Gy | 20 | 7.4 (0–55.7) | 0.03a | −0.504 | 13/21 | 0.04a | −0.464 | 8.5/18 | 0.02a | −0.609 | 8.5/18 |
| V[18F]LT | 33 | 16.8 (0.9–66.6) | 0.17 | −0.225 | 15/35 | 0.03a | −0.277 | 8/24 | 0.04a | −0.374 | 8/24 |
| V[18F]LT 14 Gy | 24 | 6.4 (0–47.9) | 0.59 | −0.113 | 16/43 | 0.32 | −0.222 | 10/34 | 0.2 | −0.290 | 10.5/34 |
| V[18F]LT 28 Gy | 22 | 0.3 (0–19.6) | 0.4 | −0.184 | 14.5/17 | 0.16 | −0.320 | 10/13 | 0.22 | −0.303 | 9.5/14 |
| V[18F]DG | 33 | 18.7 (0.5–108) | 0.24 | −0.192 | 17/36 | 0.04a | −0.336 | 13/24 | 0.05 | −0.340 | 11/13 |
| V[18F]MISO 1.5 | 33 | 1.2 (0.1–18.5) | 0.83 | −0.037 | 19/NA | 0.38 | −0.160 | 15/NA | 0.33 | −0.191 | 14/NA |
| V[18F]MISO 1.5 36 Gy | 20 | 0 (0–3.4) | 0.08 | −0.404 | 17/NA | 0.07 | −0.416 | 13/NA | 0.16 | −0.364 | 14/NA |
| V[18F]MISO 1.6 | 33 | 0.85 (0.1–14.4) | 0.76 | −0.053 | 17/NA | 0.23 | −0.214 | 13/NA | 0.14 | −0.278 | 14/NA |
| V [18F]MISO 1.6 36 Gy | 20 | 0 (0–1.6) | 0.28 | −0.258 | 17/NA | 0.37 | −0.215 | 13/NA | 0.16 | −0.364 | 14/NA |
| [18F]MISO SUVmax | 33 | 1.7 (1.5–2.5) | 0.66 | −0.074 | 17/27 | 0.24 | −0.207 | 13/24 | 0.06 | −0.347 | 13/24 |
| [18F]MISO SUVmax 36 Gy | 4/20a | 1.5 (0.7–1.8) | 0.69 | −0.097 | 19/14 | 0.51 | −0.158 | 15.5/12 | 0.64 | −0.125 | 14/13 |
| [18F]LT SUVmax | 33 | 6.5 (2.6–16) | 0.2 | −0.210 | 14.5/37.5 | 0.1 | −0.277 | 10–29.5 | 0.2 | −0.231 | 7.5/2.5 |
| [18F]LT SUVmax 14 Gy | 21 | 3 (0.5–6.4) | 0.25 | −0.257 | 0.24 | −0.282 | 9/31 | 0.09 | −0.405 | 9/32 | |
| [18F]LT SUV max 28 Gy | 11/20a | 3.2 (1.9–4.5) | 0.85 | −0.059 | 17/34 14/15 |
0.9 | −0.038 | 2/12 | 0.51 | 0.250 | 3/11 |
| [18F]DG SUVmax | 33 | 11.3 (2.9–18.3) | 0.85 | −0.033 | 17/21 | 0.45 | −0.136 | 13/21 | 0.23 | −0.229 | 8.5/13 |
| TMRmax | 33 | 1.4 (0.9–2.9) | 0.065 | −0.315 | 16.5/27 | 0.03a | −0.364 | 13/20 | 0.04a | −0.375 | 13.5/21 |
| TMRmax 36 Gy | 20 | 1.2 (0.9–2.7) | 0.38 | −0.214 | 19/16 | 0.38 | −0.214 | 16.6/13 | 0.58 | −0.147 | 12.5/14 |
| [18F]DG MTV | 33 | 23.2 (2.4–106.7) | 0.11 | −0.263 | 15.5/36 | 0.005a | −0.446 | 6.5/24 | 0.04a | −0.355 | 6.5/14 |
| [18F]LT MTV | 33 | 20.1 (0.9–135.5) | 0.15 | −0.237 | 16/36 | 0.02a | −0.392 | 12/24 | 0.05a | −0360 | 9/24 |
| [18F]MISO MTV | 33 | 0 (0–14.9) | 0.81 | −0.042 | 17/NA | 0.32 | −0.181 | 13/NA | 0.25 | −0.224 | 14/NA |
[18F]-FDG, [18F]-2-flu-2-deoxy-D-glucose; [18F]-FLT, [18F]-flu-3'deoxythymidine; [18F]-FMISO, [18F]-flumisonidazole; LC, local control; OS, overall survival; SUVmax, maximum standardised uptake value; VCT, CT tumour volume.
V – baseline tumour volume in CT, FDG, FLT, FMISO.
V14Gy, 28 Gy, 36 Gy – tumour volume measured at indicated time point during treatment.
VFMISO 1.5, 1.6 – hypoxic tumour volume based on indicated threshold levels.
MTV FDG, FLT, FMISO – metabolic tumour volume.
SUVmax– baseline maximum standardised uptake value.
TMRmax – baseline Tumour-Muscle-Ratio based on SUVmax.
TMRmax 36 Gy – Tumour-Muscle-Ratio based on SUVmax at 36 Gy.
OS, LC, DSF above/below median – time of survival or control for values of variables above or below median.
number of patients with residual uptake of tracer at selected time point/all patients analysed in selected time point