The efficacy, safety, and dose-response of nalmefene hydrochloride at 10 mg and 20 mg in patients with alcohol dependence will be evaluated in a multicenter, randomized, double-blind, placebo-controlled, 3-parallel-group comparative trial. The superiority of nalmefene hydrochloride at 20 mg to placebo will be verified in terms of reduction of alcohol consumption.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
678
As-needed; tablets, orally
As-needed; tablets, orally
Chubu
Region, Japan
Hokkaido
Region, Japan
Kanto
Region, Japan
Kinki
Region, Japan
Kyusyu
Region, Japan
Tohoku
Region, Japan
Tyugoku
Region, Japan
Change in the Number of Heavy Drinking Days (HDDs) From Baseline at Week 12
The number of HDDs is defined as the number of days per month \[days/month\] with alcohol consumption of \> 60 g for males and \> 40 g for females
Time frame: Week 12
Change in the Number of Heavy Drinking Days (HDDs) From Baseline at Week 24
Time frame: Week 24
Change in Total Alcohol Consumption (TAC) From Baseline at Week 12
Time frame: Week 12
Change in Total Alcohol Consumption (TAC) From Baseline at Week 24
Time frame: Week 24
Response Shift Drinking Risk Level (RSDRL) at Week 12
Proportion of patients with a downward shift in drinking risk level of two categories or more
Time frame: Week 12
Response Shift Drinking Risk Level (RSDRL) at Week 24
Proportion of patients with a downward shift in drinking risk level of two categories or more
Time frame: Week 24
Response Low Drinking Risk Level (RLDRL) at Week 12
Proportion of patients with low or lower drinking risk level
Time frame: Week 12
Response Low Drinking Risk Level (RLDRL) at Week 24
Proportion of patients with low or lower drinking risk level
Time frame: Week 24
70% TAC Responder Rate at Week 12
Proportion of patients with a 70% decrease in TAC
Time frame: Week 12
70% TAC Responder Rate at Week 24
Proportion of patients with a 70% decrease in TAC
Time frame: Week 24
HDD Responder Rate at Week 12
Proportion of patients with ≤4 HDDs
Time frame: Week 12
HDD Responder Rate at Week 24
Proportion of patients with ≤4 HDDs
Time frame: Week 24
Change in CGI-S From Baseline at Week 12
The CGI-S scale was used by clinicians when assessing their global impression of a patient's current clinical condition. The investigator or subinvestigator used his/her clinical experience with this patient population to rate the severity of a subject's clinical condition on a 7-point scale ranging from 1 (Normal, not at all ill) to 7 (Among the most extremely ill patients).
Time frame: Week 12
Change in CGI-S From Baseline at Week 24
The CGI-S scale was used by clinicians when assessing their global impression of a patient's current clinical condition. The investigator or subinvestigator used his/her clinical experience with this patient population to rate the severity of a subject's clinical condition on a 7-point scale ranging from 1 (Normal, not at all ill) to 7 (Among the most extremely ill patients).
Time frame: Week 24
Change in CGI-I From Baseline at Week 12
The CGI-I scale is used to assess a patient's improvement (or worsening). The investigator or subinvestigator assesses a subject's condition relative to baseline on a 7-point scale ranging from 1 (Very much improved) to 7 (Very much worse).
Time frame: Week 12
Change in CGI-I From Baseline at Week 24
The CGI-I scale was used to assess a patient's improvement (or worsening). The investigator or subinvestigator assesses a subject's condition relative to baseline on a 7-point scale ranging from 1 (Very much improved) to 7 (Very much worse).
Time frame: Week 24
Change in Logarithm Scale in Serum γ-glutamyltransferase From Baseline at Week 12
All-patients-randomised set
Time frame: Week 12
Change in Logarithm Scale in Serum γ-glutamyltransferase From Baseline at Week 24
All-patients-randomised set
Time frame: Week 24
Change in Logarithm Scale in Serum Alanine Aminotransferase From Baseline at Week 12
All-patients-randomised set
Time frame: Week 12
Change in Logarithm Scale in Serum Alanine Aminotransferase From Baseline at Week 24
All-patients-randomised set
Time frame: Week 24
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