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. 2025 May 30;25:967. doi: 10.1186/s12885-025-14370-y

Table 3.

Pharmacokinetics parameters of abexinostat prototype, two main metabolites RTP-CC-190623-1 and RTP-CC-190623-2

AUC0-t (h·ng/mL), Mean ± SD AUC0-∞ (ng·h/mL), Mean ± SD Cmax (ng/mL), Mean ± SD Tmax (h), Median T1/2 (h), Median MRTlast (h), Median
Abexinostat single dose administration on D-3
Abexinostat prototype
 40 mg (n = 4) 159 ± 12.1 171 ± 12.7 94.9 ± 11.4 0.500 2.56 2.80
 60 mg (n = 3) 225 ± 47.2 242 ± 41.0 89.8 ± 22.3 1.00 8.31 6.97
 80 mg (n = 4) 294 ± 76.5 309 ± 76.3 164 ± 60.7 0.990 4.81 3.47
RTP-CC-190623-1
 40 mg (n = 4) 286 ± 119 268 ± 104 38.0 ± 12.4 1.00 7.75 9.92
 60 mg (n = 3) 422 ± 108 426 ± NC 53.1 ± 10.7 1.00 9.82 11.6
 80 mg (n = 4) 533 ± 163 462 ± NC 78.6 ± 10.8 1.49 5.86 6.74
RTP-CC-190123-2
 40 mg (n = 4) 421 ± 175 33.1 ± 12.5 6.97
 60 mg (n = 3) 352 ± 83.4 26.0 ± 7.35 2.00
 80 mg (n = 4) 360 ± 92.1 373 ± NC 34.6 ± 15.4 1.00 7.03 8.68
Abexinostat continuous administration on C1D1
 40 mg (n = 4) 339 ± 90.9 361 ± 88.3 98.1 ± 27.6 1.00 3.69
 60 mg (n = 3) 521 ± 60.6 563 ± 69.6 115 ± 24.2 4.55# 6.28
 80 mg (n = 4) 603 ± 104 625 ± 116 128 ± 25.3 4.78& 5.13
RTP-CC-190623-1
 40 mg (n = 4) 523 ± 292 560 ± NC 44.5 ± 18.0 5.59 7.07
 60 mg (n = 3) 803 ± 186 902 ± NC 68.3 ± 9.23 5.05 9.41
 80 mg (n = 4) 1090 ± 229 1390 ± NC 80.3 ± 10.5 6.02 7.68
RTP-CC-190123-2
 40 mg (n = 4) 586 ± 344 44.7 ± 19.3 10.0
 60 mg (n = 3) 718 ± 168 46.1 ± 13.3 23.9
 80 mg (n = 4) 766 ± 144 44.7 ± 17.7 6.03
Abexinostat continuous administration on C1D7
 40 mg (n = 4) 463 ± 32.5 491 ± 43.7 107 ± 16.3 1.00 4.84
 60 mg (n = 3) 600 ± 53.8 656 ± 72.0 104 ± 26.9 0.480 6.53
 80 mg (n = 4) 767 ± 140 744 ± 132 184 ± 27.0 2.74 5.03
RTP-CC-190623-1
 40 mg (n = 4) 837 ± 263 50.6 ± 5.45 1.97
 60 mg (n = 3) 1870 ± 874 113 ± 41.7 0.980
 80 mg (n = 4) 1910 ± 604 151 ± 29.6 2.99
RTP-CC-190123-2
 40 mg (n = 4) 1010 ± 287 62.6 ± 21.5 9.92
 60 mg (n = 3) 1820 ± 668 98.3 ± 42.7 23.9
 80 mg (n = 4) 1650 ± 503 105 ± 21.0 6.02

Missing data indicates that there were no patient pharmacokinetics parameters available to calculate the corresponding data

AUC0-t Area under the concentration–time curve from time zero to time t, AUC0-∞ area under the concentration–time curve from time zero to infinite time, Cmax maximum concentration, Tmax time to peak drug concentration, T1/2 elimilation half-life, MRTlast residence time from the time of dosing to the time of the last measurable concentration, SD standard deviation

# 0.5 h after second dose of abexinostat; & 0.97 h after second dose of abexinostat