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Safety and Efficacy of DA-9805 for Parkinson's Disease

A Phase IIa, Randomized, Multicenter, Double-Blind, Placebo-Controlled Study to Evaluate the Safety, Tolerability and Efficacy of DA-9805 in Subjects With Parkinson's Disease

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03189563
Enrollment
61
Registered
2017-06-16
Start date
2018-02-06
Completion date
2019-04-10
Last updated
2022-05-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Parkinson's Disease

Brief summary

This is a phase IIa, first in human, randomized, double-blind, multicenter study to evaluate the safety, tolerability and efficacy of DA-9805 at 45mg, 90mg versus placebo in subjects diagnosed with early Parkinson's disease.

Detailed description

Parkinson's disease (PD) is recognized as one of the most common neurologic disorders, affecting approximately 1% of individuals older than 60 years. There are 2 major neuropathologic findings: the loss of pigmented dopaminergic neurons in the substantia nigra pars compacta (SNpc) and the presence of Lewy bodies. Parkinson's disease affects an estimated 1.5 million persons in the United States, with over ten million affected worldwide, and these estimates are expected to increase substantially in the next few decades. Despite the increasing prevalence, the approved agents for the early management of Parkinson's disease have changed little in the past decade; however, there have been advances in drug delivery, dosing, and the use of combination therapy in an attempt to reduce adverse events. The most important, unmet medical need in targeting Parkinson's disease is developing agents with neuroprotective potential. So far, no drug has been shown to reduce or slow down the progression of PD. DA-9805 is a botanical drug product composed of three main raw herbal materials. It is expected that DA-9805 will help treat PD by prevention of dopaminergic neurodegeneration via recovery of mitochondrial dysfunction, anti-inflammatory effect and relief from Endoplasmic reticulum (ER) stress and oxidative stress.

Interventions

DRUGDA-9805 45mg

DA-9805 15mg tid

DRUGDA-9805 90mg

DA-9805 30mg tid

OTHERPlacebo

Placebo, tid

Sponsors

Dong-A ST Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
30 Years to 79 Years
Healthy volunteers
No

Inclusion criteria

* Male or female subjects who are between 30 and 79 years old inclusive with a clinical diagnosis of Parkinson's disease as per UK Brain Bank Criteria for two (2) years or less at screening. * Hoehn and Yahr I or II at screening. * Subjects who are newly diagnosed & currently not on any Parkinson's disease medication (or) subjects who are on stable doses for at least 4 weeks prior to screening on Amantadine or anticholinergics for treatment of Parkinson's disease \*Note: Subjects that had anti-parkinsonian medication (including levodopa, dopamine agonists, entacapone and monoamine oxidase-B inhibitors) discontinued at least 60 days prior to screening, e.g., for intolerance, may be considered eligible if all other eligibility requirements are met. * Women of child-bearing potential should use reliable contraception. Acceptable methods of contraception include: surgical sterilization (e.g. bilateral tubal ligation), hormonal contraception (implantable, patch, and oral), and double-barrier methods (condom, diaphragm and spermicide are each considered a barrier). Women of child-bearing potential are defined as women physiologically capable of becoming pregnant, UNLESS they meet the following criteria: (1)Post-menopausal: 12 months of natural (spontaneous) amenorrhea or 6 months of spontaneous amenorrhea with serum Follicle Stimulating Hormone (FSH) levels \> 40mIU/m, OR; (2)6 weeks post surgical bilateral oophorectomy with or without hysterectomy * If a male and heterosexually active with a female of childbearing potential, the subject must agree to use a double barrier method of birth control (or must have been surgically sterilized) and to not donate sperm during the study. * Without clinically significant abnormalities in physical exam, neurological exam and laboratory assessments (urine/blood routine, biochemical tests and ECG) which would exclude the subject from the study in the opinion of the Investigator. For Aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) the screening levels should be ≤ 2 times upper limit normal * Subject is capable of providing informed consent and is willing to sign the ICF prior to study Screening and agrees to comply with the study protocol requirements.

Exclusion criteria

* Subject has an atypical parkinsonian syndrome or secondary parkinsonism (e.g., due to drugs, metabolic neurogenetic disorders, encephalitis, cerebrovascular disease or degenerative disease). * Subjects with history of neurosurgical intervention for Parkinson's disease. * Subjects who meet the DSM-V criteria at screening for bipolar disorder, major depressive disorder, psychotic disorders, or any other comorbid mental disorders that in the opinion of the Investigator may interfere with study conduct and results interpretation. * Subjects with clinical diagnosis of dementia (MMSE score \<24) as determined by the investigator using Mini-Mental State Examination (MMSE). * Female subjects who are pregnant or breast feeding. * Initiation of any anti-parkinsonian medication (including levodopa, dopamine agonists, entacapone and monoamine oxidase-B inhibitors) for the duration of the trial. * Initiation of Amantadine or anticholinergics for newly diagnosed subjects or change in the dosage of Amantadine or anticholinergics during the trial for subjects who were on stable doses for 4 weeks prior to screening. * Subjects who used investigational drugs or devices within 60 days prior to screening or investigational biologics within the last 6 months prior to screening. * Subjects with a clinically significant or surgical condition, including major surgeries within 28 days prior to enrollment

Design outcomes

Primary

MeasureTime frameDescription
Change in Motor MDS-UPDRS Score From Baseline at Week 1212 weeksAnalysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part II, Part III and Part IV at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)

Secondary

MeasureTime frameDescription
Change in MDS-UPDRS Subscale scores_Part I12 weeksAnalysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part I at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)
Change in S&E Total Score12 weeksChange in Schwab and England (S&E) Scale total score from baseline at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) The Schwab & England Activities of Daily Living (ADL) scale reflects the speed, ease, and independence with which an individual performs daily activities, or personal chores, such as eating, toileting, and dressing. This scale uses a rating scale from 0% to 100%, with 100% representing complete independence in performing daily activities and 0% representing a vegetative, bedridden state.
Change in PDQ-39 Score- Summary Index12 weeksChange in Parkinson's Disease Questionnaire (PDQ-39) total score from baseline at week 12.(Change from baseline = Post Baseline Measurement - Baseline Measurement) The PDQ-39 is a self-administered questionnaire which comprises 39 items addressing eight domains of health (mobility \[10 items\], activities of daily living \[6 items\], emotional wellbeing \[6 items\], stigma \[4 items\], cognition \[4 items\], social support \[3 items\], communication \[3 items\] and bodily discomfort \[3 items\]) which subjects consider to be adversely affected by the disease. Each item is scored on the following 5-point scale. The PDQ-39 Summary Index (PDQ-SI) is the sum of all answers divided by the highest score possible (i.e., number of answers multiplied by 4) which is multiplied by 100 to put the score on a 0 - 100 scale where lower scores indicate a better perceived health status and higher scores are ass
Change in H&Y Total Score at Week 1212 weeksChange in Hoehn and Yahr (H&Y) scale total score from baseline at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) H&Y describes five stages to PD progression (Score 1\ 5). A lower score represent a lower amount of symptoms.
Change in Total MDS- UPDRS Score12 weeksAnalysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part I, Part II, Part III and Part IV at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)
Change in MDS-UPDRS Subscale scores_Part III12 weeksAnalysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part III at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)
Change in MDS-UPDRS Subscale scores_Part IV12 weeksAnalysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part IV at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)
Change in Clinical Global Impression-Severity (CGI-S)12 weeksThe Global Impression-Severity (CGI) measures global severity of illness at a given point in time, and the improvement from baseline at visits following the initial baseline visit. (Change from baseline = Post Baseline Measurement - Baseline Measurement) At the screening and baseline visit, the investigator assessed the severity on a seven-point scale. At subsequent visits, the investigator was to assess the subject's severity (CGI-S) and improvement (CGI-I) relative to baseline. Severity of Illness (CGI-S) Rating should account for severity of the patient's illness. 0 = Not assessed 1. = Normal, not at all ill 2. = Borderline ill 3. = Mildly ill 4. = Moderately ill 5. = Markedly ill 6. = Severely ill 7. = Extremely ill
Scores of Clinical Global Impression-Improvement (CGI-I)12 weeksThe Global Impression-Severity (CGI) measures global severity of illness at a given point in time, and the improvement from baseline at visits following the initial baseline visit. At the screening and baseline visit, the investigator assessed the severity on a seven-point scale. At subsequent visits, the investigator was to assess the subject's severity (CGI-S) and improvement (CGI-I) relative to baseline. Global Improvement (CGI-I): Compared to the patient's condition at the baseline of this study, how much has the patient's illness improved or worsened? 0 = Not assessed 1. = Very much improved 2. = Much improved 3. = Minimally improved 4. = No change 5. = Minimally worse 6. = Much worse 7. = Very much worse
Change in MDS-UPDRS Subscale scores_Part II12 weeksAnalysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part II at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)

Countries

United States

Participant flow

Participants by arm

ArmCount
Placebo
placebo, tid Placebo: Placebo, tid
20
DA-9805 Low
DA-9805 45mg DA-9805 45mg: DA-9805 15mg tid
21
DA-9805 High
DA-9805 90mg DA-9805 90mg: DA-9805 30mg tid
19
Total60

Baseline characteristics

CharacteristicPlaceboTotalDA-9805 HighDA-9805 Low
Age, Continuous66.6 years
STANDARD_DEVIATION 7.3
64.2 years
STANDARD_DEVIATION 8.75
64.2 years
STANDARD_DEVIATION 9.36
61.9 years
STANDARD_DEVIATION 9.24
BMI28.6 kg/m^2
STANDARD_DEVIATION 6.12
27.9 kg/m^2
STANDARD_DEVIATION 5.72
27.1 kg/m^2
STANDARD_DEVIATION 4.23
28.1 kg/m^2
STANDARD_DEVIATION 6.61
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
2 Participants4 Participants0 Participants2 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
17 Participants55 Participants19 Participants19 Participants
Sex: Female, Male
Female
7 Participants23 Participants9 Participants7 Participants
Sex: Female, Male
Male
13 Participants37 Participants10 Participants14 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 200 / 210 / 19
other
Total, other adverse events
11 / 208 / 2111 / 19
serious
Total, serious adverse events
0 / 202 / 210 / 19

Outcome results

Primary

Change in Motor MDS-UPDRS Score From Baseline at Week 12

Analysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part II, Part III and Part IV at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)

Time frame: 12 weeks

Population: ITT

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in Motor MDS-UPDRS Score From Baseline at Week 121.4 score on a scaleStandard Deviation 5.56
DA-9805 LowChange in Motor MDS-UPDRS Score From Baseline at Week 12-0.9 score on a scaleStandard Deviation 7.03
DA-9805 HighChange in Motor MDS-UPDRS Score From Baseline at Week 12-1.2 score on a scaleStandard Deviation 8.41
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.3656ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.3119ANCOVA
Secondary

Change in Clinical Global Impression-Severity (CGI-S)

The Global Impression-Severity (CGI) measures global severity of illness at a given point in time, and the improvement from baseline at visits following the initial baseline visit. (Change from baseline = Post Baseline Measurement - Baseline Measurement) At the screening and baseline visit, the investigator assessed the severity on a seven-point scale. At subsequent visits, the investigator was to assess the subject's severity (CGI-S) and improvement (CGI-I) relative to baseline. Severity of Illness (CGI-S) Rating should account for severity of the patient's illness. 0 = Not assessed 1. = Normal, not at all ill 2. = Borderline ill 3. = Mildly ill 4. = Moderately ill 5. = Markedly ill 6. = Severely ill 7. = Extremely ill

Time frame: 12 weeks

Population: ITT population

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in Clinical Global Impression-Severity (CGI-S)0.1 score on a scaleStandard Deviation 0.6
DA-9805 LowChange in Clinical Global Impression-Severity (CGI-S)0.0 score on a scaleStandard Deviation 0.67
DA-9805 HighChange in Clinical Global Impression-Severity (CGI-S)0.1 score on a scaleStandard Deviation 0.71
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.8274ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.3416ANCOVA
Secondary

Change in H&Y Total Score at Week 12

Change in Hoehn and Yahr (H&Y) scale total score from baseline at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) H&Y describes five stages to PD progression (Score 1\ 5). A lower score represent a lower amount of symptoms.

Time frame: 12 weeks

Population: ITT

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in H&Y Total Score at Week 120.1 score on a scaleStandard Deviation 0.39
DA-9805 LowChange in H&Y Total Score at Week 120.0 score on a scaleStandard Deviation 0.59
DA-9805 HighChange in H&Y Total Score at Week 120.1 score on a scaleStandard Deviation 0.46
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.4978ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.888ANCOVA
Secondary

Change in MDS-UPDRS Subscale scores_Part I

Analysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part I at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)

Time frame: 12 weeks

Population: ITT population

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in MDS-UPDRS Subscale scores_Part I0.1 score on a scaleStandard Deviation 3.3
DA-9805 LowChange in MDS-UPDRS Subscale scores_Part I-1.3 score on a scaleStandard Deviation 2.82
DA-9805 HighChange in MDS-UPDRS Subscale scores_Part I-0.5 score on a scaleStandard Deviation 3.04
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.1528ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.6146ANCOVA
Secondary

Change in MDS-UPDRS Subscale scores_Part II

Analysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part II at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)

Time frame: 12 weeks

Population: ITT population

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in MDS-UPDRS Subscale scores_Part II0.8 score on a scaleStandard Deviation 3.05
DA-9805 LowChange in MDS-UPDRS Subscale scores_Part II1.3 score on a scaleStandard Deviation 2.26
DA-9805 HighChange in MDS-UPDRS Subscale scores_Part II-0.6 score on a scaleStandard Deviation 3.67
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.5755ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.1517ANCOVA
Secondary

Change in MDS-UPDRS Subscale scores_Part III

Analysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part III at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)

Time frame: 12 weeks

Population: ITT population

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in MDS-UPDRS Subscale scores_Part III0.7 score on a scaleStandard Deviation 5
DA-9805 LowChange in MDS-UPDRS Subscale scores_Part III-1.7 score on a scaleStandard Deviation 6.21
DA-9805 HighChange in MDS-UPDRS Subscale scores_Part III-0.6 score on a scaleStandard Deviation 6.02
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.2095ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.6094ANCOVA
Secondary

Change in MDS-UPDRS Subscale scores_Part IV

Analysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part IV at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)

Time frame: 12 weeks

Population: ITT population

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in MDS-UPDRS Subscale scores_Part IV0.3 score on a scaleStandard Deviation 1.38
DA-9805 LowChange in MDS-UPDRS Subscale scores_Part IV-0.1 score on a scaleStandard Deviation 0.45
DA-9805 HighChange in MDS-UPDRS Subscale scores_Part IV0.0 score on a scaleStandard Deviation 0
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.226ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.226ANCOVA
Secondary

Change in PDQ-39 Score- Summary Index

Change in Parkinson's Disease Questionnaire (PDQ-39) total score from baseline at week 12.(Change from baseline = Post Baseline Measurement - Baseline Measurement) The PDQ-39 is a self-administered questionnaire which comprises 39 items addressing eight domains of health (mobility \[10 items\], activities of daily living \[6 items\], emotional wellbeing \[6 items\], stigma \[4 items\], cognition \[4 items\], social support \[3 items\], communication \[3 items\] and bodily discomfort \[3 items\]) which subjects consider to be adversely affected by the disease. Each item is scored on the following 5-point scale. The PDQ-39 Summary Index (PDQ-SI) is the sum of all answers divided by the highest score possible (i.e., number of answers multiplied by 4) which is multiplied by 100 to put the score on a 0 - 100 scale where lower scores indicate a better perceived health status and higher scores are ass

Time frame: 12 weeks

Population: ITT

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in PDQ-39 Score- Summary Index-1.3 score on a scaleStandard Deviation 4.95
DA-9805 LowChange in PDQ-39 Score- Summary Index-1.7 score on a scaleStandard Deviation 4.58
DA-9805 HighChange in PDQ-39 Score- Summary Index-1.5 score on a scaleStandard Deviation 4.57
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.7913ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.9399ANCOVA
Secondary

Change in S&E Total Score

Change in Schwab and England (S&E) Scale total score from baseline at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) The Schwab & England Activities of Daily Living (ADL) scale reflects the speed, ease, and independence with which an individual performs daily activities, or personal chores, such as eating, toileting, and dressing. This scale uses a rating scale from 0% to 100%, with 100% representing complete independence in performing daily activities and 0% representing a vegetative, bedridden state.

Time frame: 12 weeks

Population: ITT population

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in S&E Total Score2.0 score on a scaleStandard Deviation 8.34
DA-9805 LowChange in S&E Total Score1.0 score on a scaleStandard Deviation 7
DA-9805 HighChange in S&E Total Score0.5 score on a scaleStandard Deviation 5.24
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.5691ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.1309ANCOVA
Secondary

Change in Total MDS- UPDRS Score

Analysis of the Change from Baseline in the sum of the Movement Disorders Society-Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part I, Part II, Part III and Part IV at week 12. (Change from baseline = Post Baseline Measurement - Baseline Measurement) MDS-UPDRS is a multimodal scale assessing both impairment and disability and is separated into 4 subscales. Each parkinsonian sign or symptom is rated on a 5-point severity scale (ranging from 0 to 4). The maximum total UPDRS score is 272, indicating the worst possible disability from PD. Part I: This assesses non-motor experiences of daily living (13 items, Score range: 0\ 52) Part II: This assesses motor experiences of daily living (13 items, Score range: 0\ 52) Part III: This assesses the motor signs of PD (33 items, Score range: 0\ 132) Part IV: This assesses motor complications, dyskinesias and motor fluctuations using historical and objective information (6 items, Score range: 0\ 26)

Time frame: 12 weeks

Population: ITT Population

ArmMeasureValue (MEAN)Dispersion
PlaceboChange in Total MDS- UPDRS Score1.6 scoreStandard Deviation 7.15
DA-9805 LowChange in Total MDS- UPDRS Score-2.4 scoreStandard Deviation 7.91
DA-9805 HighChange in Total MDS- UPDRS Score-1.7 scoreStandard Deviation 9.16
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.147ANCOVA
Comparison: Change from baseline is based on subjects with paired values.p-value: 0.252ANCOVA
Secondary

Scores of Clinical Global Impression-Improvement (CGI-I)

The Global Impression-Severity (CGI) measures global severity of illness at a given point in time, and the improvement from baseline at visits following the initial baseline visit. At the screening and baseline visit, the investigator assessed the severity on a seven-point scale. At subsequent visits, the investigator was to assess the subject's severity (CGI-S) and improvement (CGI-I) relative to baseline. Global Improvement (CGI-I): Compared to the patient's condition at the baseline of this study, how much has the patient's illness improved or worsened? 0 = Not assessed 1. = Very much improved 2. = Much improved 3. = Minimally improved 4. = No change 5. = Minimally worse 6. = Much worse 7. = Very much worse

Time frame: 12 weeks

Population: ITT population

ArmMeasureValue (MEAN)Dispersion
PlaceboScores of Clinical Global Impression-Improvement (CGI-I)3.6 score on a scaleStandard Deviation 0.69
DA-9805 LowScores of Clinical Global Impression-Improvement (CGI-I)3.8 score on a scaleStandard Deviation 0.54
DA-9805 HighScores of Clinical Global Impression-Improvement (CGI-I)3.9 score on a scaleStandard Deviation 1.12
p-value: 0.4052ANCOVA
p-value: 0.2643ANCOVA

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026