The Efficacy And Safety Of Mitizodone Phosphate Tablets In The Treatment of Patient With Major Depressive Disorder

A Phase II/III ,Multicenter, Randomized, Double-blind, Parallel-group, Placebo-controlled, Adaptive Design Study Evaluating the Efficacy And Safety of Mitizodone Phosphate Tablets in the Treatment of Patient With Major Depressive Disorder

This is a phase 2 and 3 adaptive design study for Mitizodone Phosphate,to find out an optimal dose in phase 2 period and confirm the result an efficacy and safety in phase 3 period.Dose-finding will be done after 8 weeks of double-blinded treatment in phase 2 period and will be assessed by both efficacy and safety from 3 dose groups of Mitizodone Phosphate.The dose be found in phase 2 period will be evaluated on efficacy and safety when compared with placebo in phase 3 period with a duration of 8 weeks treatment.The target subjects are patients with MDD.

Study Overview

• Status: Recruiting
• Conditions: Depressive Disorder, Major
• Intervention / Treatment: Drug: Mitizodone Phosphate tablets; Drug: Placebo-matching tablets

• Study Type: Interventional
• Enrollment (Estimated): 600
• Phase: Phase 2; Phase 3

Contacts and Locations

• Study Contact: Name: gang wang, Ph.D; Phone Number: 86-010-58303236; Email: gangwangdoc@gmail.com

Study Locations

• China
  • Guangdong
    • Dongguan, Guangdong, China, 523871
      • Recruiting
      • Sunshine Lake Pharma Co., Ltd.
      • Contact: Li Xue; Phone Number: +8676985315888; Email: lixuelc@hec.cn

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• 1.a Man or a woman with major depressive disorder(MDD) as the primary diagnosis according to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) criteria (classification code 296.22、296.23、296.32、296.33)
• 2.Has a Montgomery Åsberg Depression Rating Scale (MADRS) total score of 26 or greater at Screening and Baseline Visits.
• 3.Has a Clinical Global Impression - Severity of Illness (CGI-S) score of 4 or greater at Screening and Baseline Visits.

Exclusion Criteria:

• 1.has major depressive disorder with psychotic features according to the DSM-5.
• 2.Current or history of: bipolar disorder、schizophrenia、anixety disorder、insomnia、any substance abuse or dependence and other psychiatry disorder as defined in the DSM-5.
• 3.Current or history of a clinically significant neurological disorder (including epilepsy、Alzheimer disease, Parkinson disease, multiple sclerosis, Huntington disease).
• 4. has Serious body disease such as neurological disorders、cardiacvascular disorders、hepatic disorders、 renal disorders, blood system disorders and endocrine disorders.
• 5. Current or history of cancer( except basal cell of the skin and preinvasive carcinoma of cervix uteri).
• 6. Current or history of angle-closure glaucoma.
• 7. has made a suicide behavior in the previous 1 year ，or has a score greater than or equal to 4 on item 10 (suicidal thoughts) of MADRS .
• 8.has taken fluoxetine within 4 weeks prior to initial dosing.
• 9. has taken other antidepressive medications or antipsychotic medications within 2 weeks prior to initial dosing.
• 10.has psychotherap at Screening and/or Baseline Visits.
• 11.has had physiotherapy within 3 months prior to initial dosing.
• 12.Has an alanine aminotransferase, aspartate aminotransferase or total bilirubin level greater than 1.5 times the upper limits of normal.
• 13.Has an alanine aminotransferase, aspartate aminotransferase level greater than 2 times the upper limits of normal；or total bilirubin， direct bilirubin，creatinine level greater than 1.5 times the upper limits of normal；or a thyroid stimulating hormone value outside the normal range.
• 14.Has an abnormal electrocardiogram confirmed as clinically significant by the investigator.
• 15.Has a history of severe allergies.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Mitizodone Phosphate tablet 10mg; Mitizodone Phosphate tablet 10mg ,orally,once daily for 8 weeks, then placebo,orally,once daily for 2 weeks.	Drug: Mitizodone Phosphate tablets; Mitizodone Phosphate tablets will be administered with food.; Other Names: HEC113995PA•H2O
Experimental: Mitizodone Phosphate tablet 20mg; Mitizodone Phosphate tablet 10mg ,orally,once daily for 1 weeks, then Mitizodone Phosphate tablet 20mg ,orally,once daily for 7 weeks, then Mitizodone Phosphate tablet 10mg ,orally,once daily for 1 weeks, then placebo,orally,once daily for 1 weeks.	Drug: Mitizodone Phosphate tablets; Mitizodone Phosphate tablets will be administered with food.; Other Names: HEC113995PA•H2O
Experimental: Mitizodone Phosphate tablet 40mg; Mitizodone Phosphate tablet 10mg ,orally,once daily for 1 weeks, then Mitizodone Phosphate tablet 20mg ,orally,once daily for 1 weeks, then Mitizodone Phosphate tablet 40mg ,orally,once daily for 6 weeks, then Mitizodone Phosphate tablet 20mg ,orally,once daily for 1 weeks, then Mitizodone Phosphate tablet 10mg ,orally,once daily for 1 weeks.	Drug: Mitizodone Phosphate tablets; Mitizodone Phosphate tablets will be administered with food.; Other Names: HEC113995PA•H2O
Active Comparator: Placebo; Placebo,tablet,orally,once daily for 10 weeks.	Drug: Placebo-matching tablets; Placebo will be administered with food.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change From Baseline in the Montgomery-Åsberg Depression Rating Scale (MADRS) Total Score at week 8	The MADRS is a depression rating scale consisting of 10 items, each rated 0 (normal) to 6 (most abnormal). The 10 items represent the core symptoms of depressive illness. The overall score ranges from 0 (symptoms absent) to 60 (severe depression). A decrease in the total score or on individual items indicates improvement.	baseline and week 8

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of subjects With a MADRS Response at Week 8	Response is defined as a subject with a ≥50% decrease in Montgomery Åsberg Depression Rating Scale (MADRS) total score from Baseline.	baseline and week 8
Percentage of Participants in MADRS Remission at Week 8	Remission is defined as a participant with a Montgomery Åsberg Depression Rating Scale (MADRS) total score ≤10.	week 8
Change From Baseline in the Montgomery-Åsberg Depression Rating Scale (MADRS) Total Score at week 1、week 2 、week 4、week 6.	The MADRS is a depression rating scale consisting of 10 items, each rated 0 (normal) to 6 (most abnormal). The 10 items represent the core symptoms of depressive illness. The overall score ranges from 0 (symptoms absent) to 60 (severe depression). A decrease in the total score or on individual items indicates improvement.	baseline 、 week 1、week 2 、week 4 and week 6.
Change From Baseline in the Clinical Global Impression - Severity of illness (CGI-S) Total Score at week 1、week 2 、week 4、week 6、week 8.	The Clinical Global Impression-Severity of illness scale assesses the subject's Severity as assessed by the clinician at the moment on a 8-point scale: 0, not assessed ; 1, normal，not at all ill ; 2, borderline mentally ill ; 3, mildly ill ; 4, moderately ill ; 5 , markedly ill ; 6, severely ill；7，among the most extremely ill patients.	baseline、week 1、week 2 、week 4、week 6 and week 8.
Clinical Global Impression - Improvement (CGI-I) Score at week 1、week 2 、week 4、week 6、Week 8	The Clinical Global Impression- Improvement scale assesses the subject's improvement (or worsening) as assessed by the clinician relative to Baseline on a 8-point scale: 0, not assessed ;1, very much improved; 2, much improved; 3, minimally improved; 4, no change; 5, minimally worse; 6, much worse; or 7, very much worse.	week 1、week 2 、week 4、week 6 and week 8.
Change From Baseline in the hamilton anxiety rating scale （HAM-A）Total Score at week 1、week 2 、week 4、week 6、week 8.	the HAM-A is a anxiety rating scale consisting of 14 items, each rated 0 (none) to 4 (very severe). The 14 items represent the core symptoms of anxiety illness. The overall score ranges from 0 (symptoms absent) to 56 (severe anxiety). A decrease in the total score or on individual items indicates improvement.	baseline、week 1、week 2 、week 4、week 6 and week 8.

Collaborators and Investigators

• Sponsor: Sunshine Lake Pharma Co., Ltd.

Study record dates

Study Major Dates

• Study Start (Actual): December 14, 2021
• Primary Completion (Estimated): July 1, 2027
• Study Completion (Estimated): November 1, 2027

Study Registration Dates

• First Submitted: July 21, 2021
• First Submitted That Met QC Criteria: July 21, 2021
• First Posted (Actual): July 30, 2021

Study Record Updates

• Last Update Posted (Actual): May 5, 2026
• Last Update Submitted That Met QC Criteria: April 29, 2026
• Last Verified: May 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Mental Disorders; Mood Disorders; Depressive Disorder; Depressive Disorder, Major
• Other Study ID Numbers: HEC113995-P-5

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No