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Major Depressive Disorder (MDD)Phase 2NCT07101120

A Phase 2 Study to Evaluate Efficacy and Safety of KH607 Tablets in Adult Participents With Major Depressive Disorder

A Phase 2 study testing KH607 tablets in people with Major Depressive Disorder (MDD), run by Chengdu Kanghong Pharmaceutical Group Co., Ltd. at 1 site in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a two-part (open-label followed by double-blind) study evaluating the safety, tolerability, pharmacokinetics, and efficacy of KH607 in 120 participants diagnosed with moderate or severe Major Depressive Disorder. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Major Depressive Disorder (MDD)
What is being tested?
KH607 tablets
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
126 participants
Where
1 siteChina
Study dates
19 Mar 2025to 9 Feb 2026
Phase
Phase 2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age: 18 to 65 years old (inclusive), Male or female.
  • Participant with diagnosis of MDD as diagnosed by Structured Clinical Interview for Diagnostic and Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) , with symptoms that have been present for at least a 4-week period
  • Participant has a Hamilton Rating Scale for Depression (HAM-D) total score ≥24 at screening and Day 1 (prior to dosing).
  • Participants who is taking antidepressants must have stopped for 7 days or 5 half-lives of the antidepressant prior to Day 1.
  • Participant is willing to stop other antidepressant or antianxiety medications and any new pharmacotherapy regimens, including as-needed benzodiazepine anxiolytics and sleep aids, until after completion of the Day 42 visit.
  • Fully understand the procedures and sigh the informed consent.

Who cannot join

  • Participant is currently at significant risk of suicide, or has attempted suicide associated with the current episode of MDD.
  • Participant has a history of treatment-resistant depression, defined as persistent depressive symptoms despite treatment with adequate doses of antidepressants from two different classes for an adequate amount of time.
  • Participant has active psychosis.
  • Participant had used modified electroconvulsive therapy (MECT), transcranial magnetic stimulation (TMS), vagus nerve stimulation (VNS), deep brain stimulation (DBS), light therapy, etc. within 1 month prior to Day 1.
  • Subject has a history of sleep apnea.
  • Participant has a medical history of bipolar disorder, schizophrenia, and/or schizoaffective disorder (such as olanzapine, risperidone, quetiapine, aripiprazole, eptifamol, ziprasidone, caliparazine, sodium valproate, lithium carbonate, etc.) within the current major depressive episode.
  • Participant has a clinically significant abnormal 12-lead ECG at the screening or baseline visits. NOTE: mean QT interval calculated using the Fridericia method (QTcF) of >450 msec in males or >470 msec in females will be the basis for exclusion from the study.

Trial locations and contacts

1 site in 1 country.

China1 site
  • BeiJing AnDing Hospital capital medical University

    Beijing

Other trials in China

About this study

Official title: A Phase 2, Two-Part (Open-Label Followed by Double-Blind) Study Evaluating the Safety, Tolerability, Pharmacokinetics, and Efficacy of KH607 in the Treatment of Adult Participants With Moderate or Severe Major Depressive Disorder

This is a two-part (open-label followed by double-blind) study evaluating the safety, tolerability, pharmacokinetics, and efficacy of KH607 in 120 participants diagnosed with moderate or severe Major Depressive Disorder.

Read the detailed description

Part A is an open-label study with dosing of KH607 tablets for 14 days.

Part B is a randomized, double-blind, parallel-group, placebo-controlled study. Eligible participants will be randomized to KH607 group or placebo group for 21 days.

Being tested
KH607 tablets, placebo
Medical subject headings
Depressive Disorder, Major

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • KH607 tabletsDrug

    oral 30mg , once daily for 14 days

  • placeboDrug

    oral, once daily for 21 days

  • KH607 tabletsDrug

    oral 20mg, once daily for 21 days

  • KH607 tabletsDrug

    oral 30mg, once daily for 21 days

Study groups in NCT07101120
Study groupRoleWhat they receive
Part A: KH607ExperimentalParticipants receive KH607, 30 milligrams (mg), oral tablets, once daily for 14 days, as tolerated.
Receives: Drug: KH607 tablets
Part B: PlaceboPlacebo comparatorEligible participants receive matching placebo tabels once daily for 21 days.
Receives: Drug: placebo
Part B: KH607 30mgExperimentalParticipants receive KH607, 30 milligrams (mg), oral tablets, once daily for 21 days.
Receives: Drug: KH607 tablets
Part B: KH607 20mgExperimentalParticipants receive KH607, 20 milligrams (mg), oral tablets, once daily for 21 days.
Receives: Drug: KH607 tablets

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change From Baseline in the 17-item Hamilton Rating Scale for Depression (HAM-D17) Total Score at Day 15 - Part A

    The HAM-D total score comprised a sum of 17 individual item scores.The total score could range from 0 to 52. Higher scores indicated a greater degree of depression. The analysis was performed in participants included in Part B of the study.

    Measured: Baseline to Day 15

  2. Change From Baseline in the 17-item Hamilton Rating Scale for Depression (HAM-D17) Total Score at Day 22 - Part B

    The HAM-D total score comprised a sum of 17 individual item scores.The total score could range from 0 to 52. Higher scores indicated a greater degree of depression. The analysis was performed in participants included in Part B of the study.

    Measured: Baseline to Day 22

Secondary outcomes (18)
  1. Part A:Pharmacokinetic parameters of KH607 tablets (Cmax)

    Maximum observed plasma concentration following administration

    Measured: Part A: Day 1 to Day 21.

  2. Change From Baseline in the 17-item Hamilton Rating Scale for Depression (HAM-D17) Total Score at Day 15 - Part A

    The HAM-D total score comprised a sum of 17 individual item scores.The total score could range from 0 to 52. Higher scores indicated a greater degree of depression. The analysis was performed in participants included in Part B of the study.

    Measured: Part A: Day 15

  3. Change From Baseline in the 17-item Hamilton Rating Scale for Depression (HAM-D17) Total Score at all other time points - Part A

    The HAM-D total score comprised a sum of 17 individual item scores.The total score could range from 0 to 52. Higher scores indicated a greater degree of depression. The analysis was performed in participants included in Part B of the study.

    Measured: Part A: Day 3,8,12,21,28

  4. Change From Baseline in the Montgomery and Åsberg Depression Rating Scale (MADRS) Total Score at Day 15 and All Other Time Points - Part A

    The MADRS was a ten-item diagnostic questionnaire which psychiatrists used to measure the severity of depressive episodes in participants with mood disorders. It was designed as an adjunct to the HAM-D, to be more sensitive than the Hamilton Scale to the changes brought on by antidepressants and other forms of treatment. Each item yielded a score of 0 to 6. The MADRS total score was calculated as the sum of the 10 individual item scores, which ranged from 0 to 60. Higher MADRS scores indicated more severe depression. A negative change from baseline indicated less severe depression. A positive change from baseline indicated more severe depression. The analysis was performed in participants included in Part A of the study.

    Measured: Part A: Day 3,8,12,15,21,28

  5. Change From Baseline in Hamilton Anxiety Rating Scale (HAM-A) Total Score at All Time Points - Part A

    The 14-item HAM-A was used to rate the severity of symptoms of anxiety. Each of the 14 items was defined by a series of symptoms, and measured both psychic anxiety (mental agitation and psychological distress) and somatic anxiety (physical complaints related to anxiety). Scoring for HAM-A was calculated by assigning scores of 0 (not present) to 4 (very severe), with a total score range of 0 to 56. The HAM-A total score was calculated as the sum of the 14 individual item scores. A negative change from baseline indicated less anxiety. A positive change from baseline indicated more anxiety. The analysis was performed in participants included in Part A of the study.

    Measured: Part A: Day 3,8,12,15,21,28

  6. Percentage of Participants With Clinical Global Impression - Severity (CGI-S) Response - Part A

    The CGI-S item employed a 7-point Likert scale to measure the overall severtity in the participant's condition. The analysis was performed in participants included in Part A of the study.

    Measured: Part A: Day 3,8,12,15,21,28

  7. Percentage of Participants With Clinical Global Impression - Improvement (CGI-I) Response - Part A

    The CGI-I item employed a 7-point Likert scale to measure the overall improvement in the participant's condition post-treatment. The investigator rated the participant's total improvement whether or not it was due entirely to drug treatment. The CGI-I was only rated at post-treatment assessments. By definition, all CGI-I assessments were evaluated against baseline conditions. CGI-I response was defined as having a CGI-I global improvement score of 1 (very much improved) or 2 (much improved). The analysis was performed in participants included in Part A of the study. Data is reported for participants who had CGI-I response.

    Measured: Part A: Day 3,8,12,15,21,28

  8. Percentage of Participants With HAM-D Response - Part A

    HAM-D response was defined as having a 50% or greater reduction from baseline in HAM-D total score. The analysis was performed in participants included in Part A of the study. Data is reported for participants who had HAM-D response.

    Measured: Part A: Day 3,8,12,15,21,28

  9. Percentage of Participants With HAM-D Remission - Part A

    HAM-D remission was defined as having a HAM-D total score of ≤7. The analysis was performed in participants included in Part A of the study.

    Measured: Part A: Day 3,8,12,15,21,28

  10. Change From Baseline in the 17-item Hamilton Rating Scale for Depression (HAM-D17) Total Score at all other time points - Part B

    The HAM-D total score comprised a sum of 17 individual item scores.The total score could range from 0 to 52. Higher scores indicated a greater degree of depression. The analysis was performed in participants included in Part B of the study.

    Measured: Part B: Day 3,8,15,28,35,42

  11. Change From Baseline in the Montgomery and Åsberg Depression Rating Scale (MADRS) Total Score at Day 15 and All Other Time Points - Part B

    The MADRS was a ten-item diagnostic questionnaire which psychiatrists used to measure the severity of depressive episodes in participants with mood disorders. It was designed as an adjunct to the HAM-D, to be more sensitive than the Hamilton Scale to the changes brought on by antidepressants and other forms of treatment. Each item yielded a score of 0 to 6. The MADRS total score was calculated as the sum of the 10 individual item scores, which ranged from 0 to 60. Higher MADRS scores indicated more severe depression. A negative change from baseline indicated less severe depression. A positive change from baseline indicated more severe depression. The analysis was performed in participants included in Part A of the study.

    Measured: Part B: Days3, 8, 15, 22,28,35 and 42

  12. Change From Baseline in Hamilton Anxiety Rating Scale (HAM-A) Total Score at All Time Points - Part B

    The 14-item HAM-A was used to rate the severity of symptoms of anxiety. Each of the 14 items was defined by a series of symptoms, and measured both psychic anxiety (mental agitation and psychological distress) and somatic anxiety (physical complaints related to anxiety). Scoring for HAM-A was calculated by assigning scores of 0 (not present) to 4 (very severe), with a total score range of 0 to 56. The HAM-A total score was calculated as the sum of the 14 individual item scores. A negative change from baseline indicated less anxiety. A positive change from baseline indicated more anxiety. The analysis was performed in participants included in Part A of the study.

    Measured: Part B: Days3, 8, 15, 22,28,35 and 42

  13. Percentage of Participants With Clinical Global Impression - Severity (CGI-S) Response - Part B

    Measured: Part B: Days3, 8, 15, 22,28,35 and 42

  14. Percentage of Participants With Clinical Global Impression - Improvement (CGI-I) Response - Part B

    Measured: Part B: Days3, 8, 15, 22,28,35 and 42

  15. Percentage of Participants With HAM-D Response - Part B

    Measured: Part B: Days3, 8, 15, 22,28,35 and 42

  16. Percentage of Participants With HAM-D Remission - Part B

    Measured: Part B: Days3, 8, 15, 22,28,35 and 42

  17. Part A:Pharmacokinetic parameters of KH607 tablets(Tmax)

    Time to reach the maximum observed plasma concentration following administration

    Measured: Part A: Day 1 to Day 21.

  18. Part A:Pharmacokinetic parameters of KH607 tablets(AUC0-inf)

    The AUCs is the area under the plasma concentration-time curve from time 0 to the Infinity post-dose.

    Measured: Part A: Day 1 to Day 21.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted3 Aug 2025
  2. Study start19 Mar 2025
  3. Primary completion9 Feb 2026
  4. Study completion9 Feb 2026

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
126 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07101120
Sponsor's protocol ID
KH607-40101
Status last verified
Aug 2025
First submitted
24 Jul 2025
Last updated
28 Jul 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing KH607 tablets in people with Major Depressive Disorder (MDD), run by Chengdu Kanghong Pharmaceutical Group Co., Ltd. at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 28 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change From Baseline in the 17-item Hamilton Rating Scale for Depression (HAM-D17) Total Score at Day 15 - Part A (time frame: Baseline to Day 15). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Jul 2026.

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