Research Article

A Pilot Study of Mifepristone in Combat-Related PTSD

Table 1

Clinical and neuroendocrine outcomes.

Pre-treatmentPost-treatmentBetween Groups Significance
Initial Endpoint 4-weekInitial to endpointInitial to 4-week
Mean (SD)Mean (SD)Mean (SD) value value

ClinicalCAPS ScoreDrug ( )68.75 (10.24)43.50 (19.49)44.00 (24.12) 0.4250.047 a
Placebo ( )68.25 (8.77)56.50 (31.89)65.25 (18.86)
Intrusive SxDrug ( )13.75 (8.06)8.00 (7.70)7.50 (9.00) 0.463 0.126
Placebo ( )14.50 (4.65)12.00 (10.30)15.00 (9.42)
Avoidance SxDrug ( )29.25 (7.14)18.75 (11.44)17.00 (10.74) 0.2390.027 b
Placebo ( )28.50 (1.29)25.50 (7.05)26.00 (5.72)
Hyperarousal SxDrug ( )25.75 (0.50)16.75 (5.56)19.50 (9.68) 0.786 0.359
Placebo ( )25.25 (6.40)18.25 (10.53)24.25 (5.97)
BDIDrug ( )22.25 (5.85)13.25 (4.72)11.50 (9.15) 0.124 0.769
Placebo ( )24.25 (12.12)24.75 (10.05)23.75 (9.54)
PCLDrug ( )60 (10.83)46.75 (11.79)49.25 (15.59) 0.691 0.200
Placebo ( )63.25 (11.41)54.25 (24.17)56.25 (16.68)

NeuroendocrineCortisol (μg/dL)Drug ( )13.15 (3.52)31.28 (5.49)11.53 (4.27)0.001 c 0.786
Placebo ( )12.43 (6.16)12.90 (4.87)11.83 (2.91)
ACTH (pg/mL)Drug ( )49.33 (29.69)153.45 (40.25)53.63 (8.08)0.009 d 0.785
Placebo ( )30.88 (14.83)38.40 (16.18)41.63 (19.33)
Lysozyme IC50 (nM)Drug ( )8.00 (2.55)5.57 (.76)6.73 (3.66) 0.162 0.411
Placebo ( )3.27 (2.89)3.65 (2.06)5.03 (1.68)
GR/cellDrug ( )1557.67 (539.75)188.67 (116.89)1593.00 (770.02)0.003 0.322
Placebo ( )1019.50 (553.91)1243.00 (543.84)1824.75 (683.80)

aMedian change in CAPS score for mifepristone group (20.0); median change in CAPS score for placebo group (10.5); nonparametric value (0.021).
bMedian change in CAPS avoidance symptom score for mifepristone group (11.0); median change in CAPS avoidance symptom score for placebo group (4.0); nonparametric value (0.028).
cMedian change in cortisol for mifepristone group (17.2); median change in cortisol for placebo group (0.4); nonparametric value (0.021).
dMedian change in ACTH for mifepristone group (90.6); median change ACTH for placebo group (4.2); nonparametric value (0.021).