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A Study to Evaluate the Efficacy and Safety of TAK-906 in Adult Participants With Symptomatic Idiopathic or Diabetic Gastroparesis

A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Phase 2b Study to Evaluate the Efficacy and Safety of Twice-Daily Oral Administration of a Peripherally Acting Dopamine Receptor D2/D3 Antagonist, TAK-906 for the Treatment of Adult Subjects With Symptomatic Idiopathic or Diabetic Gastroparesis

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03544229
Enrollment
242
Registered
2018-06-01
Start date
2018-10-14
Completion date
2021-07-15
Last updated
2022-11-16

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

Conditions

Diabetic Gastroparesis, Idiopathic Gastroparesis

Keywords

Drug Therapy

Brief summary

The purpose of this study is to assess the efficacy and safety of treatment with 2 dose levels of TAK-906 in adult participants with gastroparesis compared with placebo during 12 weeks of treatment.

Detailed description

The drug being tested in this study is called TAK-906. TAK-906 is being tested to treat people who have symptomatic idiopathic or diabetic gastroparesis. The study will enroll approximately 205 patients. Participants will be randomly assigned (by chance, like flipping a coin) to one of the three treatment groups (in 1:1:1:1 ratio) which will remain undisclosed to the patient and study doctor during the study (unless there is an urgent medical need): * TAK-906 Maleate 5 mg (After implementation of Amendment 8, participants will not be further randomized to this arm) * TAK-906 Maleate 25 mg * TAK-906 Maleate 50 mg Placebo (dummy inactive pill) - this is a capsule that looks like the study drug but has no active ingredient Prior to Amendment 8, participants were randomized to receive TAK-906 5 mg. After implementation of Amendment 8, participants will not be further randomized to this dose arm. All participants will be asked to take one capsule twice daily, at approximately the same time each day throughout the study. This multi-center trial will be conducted worldwide. The overall study duration is approximately 17 weeks. Participants will make multiple visits to the clinic, and will be contacted by telephone 30 days after receiving their last dose of study drug for a follow-up assessment.

Interventions

TAK-906 maleate capsules.

DRUGPlacebo

TAK-906 maleate placebo-matching capsules.

Sponsors

Millennium Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
No

Inclusion criteria

1. Should have experienced symptoms of gastroparesis (e.g., postprandial fullness, nausea, vomiting, upper abdominal pain, and early satiety for at least 3 months before screening as assessed by a physician. 2. Must have confirmed delayed gastric emptying by meeting 1 of the following criteria: 1. Confirmed by an accepted diagnostic testing method (Gastric Emptying Breath Test \[GEBT\], scintigraphy, or wireless motility capsule) that is documented in the participant's medical records prior to screening; OR 2. Participants without previous confirmation of delayed gastric emptying prior to screening will undergo a GEBT after they have stopped taking prohibited medications. 3. Must have an average composite ANMS GCSI-DD symptom score ≥2 during the 7 days before randomization. The predominant symptom experienced by participants must not be abdominal pain. 4. Must experience nausea: nausea subscale (of ANMS GCSI-DD) symptom score ≥2 at least 4 of 7 days or an average nausea subscale symptom score ≥2 during the 7 days before randomization. Nausea symptoms must not be attributable to a central disorder (e.g. motion sickness, glaucoma, menstrual cycles, migraine headache). 5. Has a body mass index (BMI) of ≥18 to ≤40 kg/m\^2 inclusive. 6. Participant with diabetes mellitus must have glycosylated hemoglobin (HbA1c) ≤11% at screening and before randomization. 7. Absence of gastric outlet obstruction confirmed by upper GI, computed tomography or endoscopy.

Exclusion criteria

1. Known secondary causes of gastroparesis including but not limited to Parkinson disease, cancer, viral illness, or connective tissue diseases. 2. Predominant gastroparetic symptom is epigastric pain, diffuse abdominal pain, or pain associated with bowel movement. 3. Is taking medications that affect gastric emptying including opioids, glucagon-like peptide-1 analogs (e.g., exenatide, liraglutide), amylin analogs (e.g., pramlintide), and cannabinoids. 4. Prior history of gastric surgery, including but not limited to gastrectomy, gastric bypass, gastric banding, bariatric surgery, pyloroplasty, vagotomy, or fundoplication, which has manipulated the natural anatomy of the stomach. 5. History of intra-pyloric botulinum toxin injection within 3 months of Screening or currently has functioning implantable electric stimulator. 6. Nasogastric, percutaneous endoscopic gastrostomy, or percutaneous endoscopic jejunostomy feeding tube or inpatient hospitalization for gastroparesis within 2 weeks before the Screening Visit. 7. Required parenteral nutrition for treatment of gastroparesis within 2 months before the Screening Visit. 8. Previous diagnosis of gastric bezoar (the presence of retained liquid, bile, or small amounts of poorly organized food residue is permitted). 9. Poor control of diabetes within 30 days prior to randomization, including diabetic ketoacidosis, hypoglycemia requiring medical intervention, admission for control of diabetes or diabetic complications. 10. Elevated serum prolactin (\>upper limit of normal \[ULN\]) at Screening. 11. Has concurrent hypogonadism, current clinically significant menstrual abnormalities, such as amenorrhea or oligomenorrhea, or other clinical features of hyperprolactinemia such as galactorrhea or gynecomastia. 12. Has acute or chronic liver disease meeting any of the criteria described below: * Has an alanine aminotransferase (ALT), aspartate aminotransferase (AST) or total bilirubin \>2.0 times the ULN. * Has pre-existing liver cirrhosis that meets Child-Pugh Class B (moderate; total score 7 to 9 points) or C (severe; total score 10 to 15 points) (see Appendix B). * Has acute or chronic hepatitis B or C virus infection, manifesting as one of the following at screening: * Positive hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (HBcAb). NOTE: if a participants tests negative for HBsAg, but positive for HBcAb, the participant would be eligible if the Investigator has documentation of other test results showing that the participant does not have active hepatitis B infection. * Participants with positive hepatitis C antibody (HCV IgG) and quantitative HCV polymerase chain reaction (PCR). HCV PCR is performed only if HCV IgG is positive. 13. Has renal impairment, defined as a lower limit of (estimated glomerular filtration rate \[eGFR\]) \<30 mL/min at screening visit. 14. Has active neoplastic disease or history of neoplastic disease within 5 years of screening visit (except for basal or squamous cell carcinoma of the skin or carcinoma in situ of the uterine cervix that has been definitively treated with standard of care approaches). 15. Uncontrolled or poorly controlled medical or psychiatric comorbidities which might affect their ability to participate in the study. 16. Has known COVID-19 infection, or suspected COVID-19 infection (as assessed by the investigator). 17. Signs/symptoms or history of extrapyramidal system disease and other clinically relevant CNS or neuropsychiatric disease including but not limited to tardive dyskinesia, neuroleptic malignant syndrome, acute dystonia, parkinsonian like symptoms, severe mental depression, and history of suicide attempt.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in the American Neurogastroenterology and Motility Society Gastroparesis Cardinal Symptom Index-Daily Diary (ANMS GCSI-DD) Composite Score at Week 12 of the Treatment PeriodBaseline and Week 12ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD composite score included score of nausea, early satiety, upper abdominal pain, and postprandial fullness. The severity scores of these symptoms range from 0 (none) to 4 (very severe). The daily composite score was calculated by summing the scores on the 4 symptom items (nausea, early satiety, postprandial fullness, and upper abdominal pain) and then dividing by 4, that is the number of items within the composite score. Thus, the maximum daily composite score was (4 symptoms × maximum score 4 divided by 4) = 16/4 = 4. The ANMS GCSI-DD daily composite score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. Mixed-effects Model for Repeated Measures (MMRM) was used for the analysis.

Secondary

MeasureTime frameDescription
Change From Baseline in the ANMS GCSI-DD Nausea Symptom Score at Week 12 of the Treatment PeriodBaseline and Week 12ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD assesses nausea, early satiety, postprandial fullness, and upper abdominal pain on a severity score calculated from a 5-point Likert scale. The ANMS GCSI-DD nausea symptom score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. MMRM was used for analysis.
Change From Baseline in the ANMS GCSI-DD Early Satiety Symptom Score at Week 12 of the Treatment PeriodBaseline and Week 12ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD assesses nausea, early satiety, postprandial fullness, and upper abdominal pain on a severity score calculated from a 5-point Likert scale. The ANMS GCSI-DD early satiety symptom score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from Baseline indicated improvement. MMRM was used for the analysis.
Change From Baseline in the ANMS GCSI-DD Postprandial Fullness Symptom Score at Week 12 of the Treatment PeriodBaseline and Week 12ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD assesses nausea, early satiety, postprandial fullness, and upper abdominal pain on a severity score calculated from a 5-point Likert scale. The ANMS GCSI-DD postprandial fullness symptom score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. MMRM was used for the analysis.
Change From Baseline in the ANMS GCSI-DD Upper Abdominal Pain Symptom Score at Week 12 of the Treatment PeriodBaseline and Week 12ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD assesses nausea, early satiety, postprandial fullness, and upper abdominal pain on a severity score calculated from a 5-point Likert scale. The ANMS GCSI-DD upper abdominal pain symptom score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. MMRM was used for the analysis.
Change From Baseline in the ANMS GCSI-DD Recorded Vomiting Frequency at Week 12 of the Treatment PeriodBaseline and Week 12Vomiting frequency was collected as the number of times a participant vomited in a 24-hour period i.e., vomiting episodes using the ANMS GCSI-DD. The daily score was averaged over 7 days. Higher scores indicate more severe symptoms. MMRM was used for the analysis.
Percentage of Participants With at Least 50% Reduction From Baseline in ANMS GCSI-DD Composite Score at Week 12Baseline and Week 12ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis . The ANMS GCSI-DD composite score included score of nausea, early satiety, upper abdominal pain and postprandial fullness. The severity scores of these symptoms range from 0 (none) to 4 (very severe). The daily composite score was calculated by summing the scores on the 4 symptom items (nausea, early satiety, postprandial fullness, and upper abdominal pain) and then dividing by 4, that is the number of items within the composite score. Thus, the maximum daily composite score was (4 symptoms × maximum score 4 divided by 4) = 16/4 = 4. The ANMS GCSI-DD daily composite score ranged from 0 to 4 with higher scores reflecting greater symptom severity.
Change From Baseline in the ANMS GCI-DD Bloating Severity Scale Score at Week 12 of the Treatment PeriodBaseline and Week 12The bloating severity scale was scored from 0 to 4 (where 0 = no symptom and 4 = severe symptom). The daily total score can range from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. MMRM was used for analysis.
Change From Baseline in the ANMS GCSI-DD Total Score at Week 12 of the Treatment PeriodBaseline and Week 12Daily total score was calculated by summing scores on each of the 5 symptom items in ANMS GCSI-DD (nausea, early satiety, postprandial fullness, upper abdominal pain and vomiting) plus the bloating severity item and then dividing by 6. When calculating total score, vomiting frequency was scored from 0 to 4 (where 0=no vomiting and 4=four or more episodes of vomiting). The daily total score can range from 0 to 4 with higher scores reflecting greater symptom severity. MMRM was used for analyses.
Percentage of Symptomatic WeeksUp to 12 weeksSymptomatic weeks are weeks with average composite symptom score assessed as \>mild \[ANMS GCSI-DD score ≥2\] during 12 weeks of treatment. Analysis of variance (ANOVA) was used for the analysis.
Change From Baseline in the Patient Assessment of Upper Gastrointestinal Disorders-Symptom Severity Index (PAGI-SYM) Total Score at Week 12 of the Treatment PeriodBaseline and Week 12The PAGI-SYM total score is defined as the mean of 6 PAGI-SYM subscale scores from 20 items. A 6-point Likert response scale, ranging from 0 (none) to 5 (very severe), is used to measure symptom severity in participants with upper GI disorders. The negative change from baseline indicates improvement. MMRM was used for analysis.
Change From Baseline in the ANMS GCSI-DD Overall Severity of Gastroparesis Symptoms Score at Week 12 of the Treatment PeriodBaseline and Week 12The overall severity of gastroparesis symptoms is the participant report of the overall severity rating of their symptoms as entered daily in the ANMS GCSI-DD and at time of visit. Severity was rated on a 0 (none) to 4 (very severe) scale. Higher score values indicated more severe symptoms. MMRM was used for the analysis.

Countries

Belgium, Japan, Poland, United States

Participant flow

Recruitment details

Participants with symptomatic idiopathic or diabetic gastroparesis took part in the study at 73 investigative sites in Belgium, Poland, Japan and the United States from 14 October 2018 to 15 July 2021.

Pre-assignment details

Participants receive TAK-906 5 mg, 25 mg, 50 mg Maleate or placebo in 1:1:1:1 ratio until protocol amendment 8 was implemented. As pre-specified in protocol amendment 8 further randomization TAK-906 5 mg arm was discontinued and remaining enrolled participants were randomized into TAK-906 25 mg, TAK-906 50 mg Maleate or placebo in 1:1:1 ratio.

Participants by arm

ArmCount
Placebo
TAK-906 maleate placebo-matching capsules, orally, BID for up to 12 weeks.
73
TAK-906 Maleate 5 mg
TAK-906 maleate 5 mg, capsules, orally, BID for up to 12 weeks.
23
TAK-906 Maleate 25 mg
TAK-906 maleate 25 mg, capsules, orally, BID for up to 12 weeks.
72
TAK-906 Maleate 50 mg
TAK-906 maleate 50 mg, capsules, orally, BID for up to 12 weeks.
74
Total242

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event1010
Overall StudyLack of Efficacy0100
Overall StudyLost to Follow-up3002
Overall StudyProtocol Deviation0010
Overall StudyVoluntary Withdrawal2130

Baseline characteristics

CharacteristicPlaceboTotalTAK-906 Maleate 50 mgTAK-906 Maleate 25 mgTAK-906 Maleate 5 mg
Age, Continuous57.1 years
STANDARD_DEVIATION 14.22
55.7 years
STANDARD_DEVIATION 14.24
53.4 years
STANDARD_DEVIATION 15.09
56.4 years
STANDARD_DEVIATION 13.31
56.3 years
STANDARD_DEVIATION 14.32
ANMS GCSI-DD Composite Score2.59 score on a scale2.62 score on a scale2.64 score on a scale2.57 score on a scale2.77 score on a scale
ANMS GCSI-DD Early Satiety Symptom Score2.80 score on a scale2.83 score on a scale2.82 score on a scale2.82 score on a scale2.97 score on a scale
ANMS GCSI-DD Nausea Symptom Score2.80 score on a scale2.75 score on a scale2.72 score on a scale2.70 score on a scale2.85 score on a scale
ANMS GCSI-DD Overall Severity of Gastroparesis Symptoms Score2.90 score on a scale2.89 score on a scale2.86 score on a scale2.86 score on a scale3.07 score on a scale
ANMS GCSI-DD Postprandial Fullness Symptom Score2.99 score on a scale3.03 score on a scale3.08 score on a scale2.98 score on a scale3.16 score on a scale
ANMS GCSI-DD Recorded Vomiting Frequency1.41 vomiting episodes/day1.23 vomiting episodes/day1.18 vomiting episodes/day1.25 vomiting episodes/day0.73 vomiting episodes/day
ANMS GCSI-DD Total Score2.40 score on a scale2.40 score on a scale2.41 score on a scale2.37 score on a scale2.49 score on a scale
ANMS GCSI-DD Upper Abdominal Pain Symptom Score1.76 score on a scale1.85 score on a scale1.94 score on a scale1.77 score on a scale2.11 score on a scale
Bloating Severity Scale Score2.86 score on a scale2.91 score on a scale2.91 score on a scale2.89 score on a scale3.13 score on a scale
Body Mass Index (BMI)29.35 kg/m^2
STANDARD_DEVIATION 5.003
28.69 kg/m^2
STANDARD_DEVIATION 5.343
28.52 kg/m^2
STANDARD_DEVIATION 4.934
27.61 kg/m^2
STANDARD_DEVIATION 5.835
30.48 kg/m^2
STANDARD_DEVIATION 5.606
Ethnicity (NIH/OMB)
Hispanic or Latino
30 Participants110 Participants28 Participants38 Participants14 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
42 Participants130 Participants45 Participants34 Participants9 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants2 Participants1 Participants0 Participants0 Participants
Height164.17 centimetres (cm)
STANDARD_DEVIATION 10.238
163.94 centimetres (cm)
STANDARD_DEVIATION 9.054
166.12 centimetres (cm)
STANDARD_DEVIATION 8.841
161.32 centimetres (cm)
STANDARD_DEVIATION 7.313
164.43 centimetres (cm)
STANDARD_DEVIATION 9.178
PAGI-SYM Total Score3.13 score on a scale3.13 score on a scale3.13 score on a scale3.05 score on a scale3.33 score on a scale
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants1 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
8 Participants39 Participants15 Participants12 Participants4 Participants
Race (NIH/OMB)
Black or African American
10 Participants26 Participants11 Participants4 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants4 Participants2 Participants1 Participants0 Participants
Race (NIH/OMB)
White
54 Participants172 Participants45 Participants55 Participants18 Participants
Region of Enrollment
Belgium
3 Participants9 Participants3 Participants3 Participants0 Participants
Region of Enrollment
Japan
8 Participants35 Participants13 Participants10 Participants4 Participants
Region of Enrollment
Poland
2 Participants6 Participants2 Participants2 Participants0 Participants
Region of Enrollment
United States of America
60 Participants192 Participants56 Participants57 Participants19 Participants
Sex: Female, Male
Female
54 Participants183 Participants49 Participants61 Participants19 Participants
Sex: Female, Male
Male
19 Participants59 Participants25 Participants11 Participants4 Participants
Smoking Classification
Participant has Never Smoked
51 Participants180 Participants54 Participants57 Participants18 Participants
Smoking Classification
Participant is a Current Smoker
10 Participants23 Participants5 Participants7 Participants1 Participants
Smoking Classification
Participant is an Ex-smoker
12 Participants39 Participants15 Participants8 Participants4 Participants
Weight79.35 kilograms (kg)
STANDARD_DEVIATION 16.383
77.29 kilograms (kg)
STANDARD_DEVIATION 16.36
78.77 kilograms (kg)
STANDARD_DEVIATION 15.201
71.97 kilograms (kg)
STANDARD_DEVIATION 16.261
82.62 kilograms (kg)
STANDARD_DEVIATION 17.021

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 730 / 230 / 720 / 74
other
Total, other adverse events
0 / 732 / 234 / 724 / 74
serious
Total, serious adverse events
2 / 730 / 232 / 722 / 74

Outcome results

Primary

Change From Baseline in the American Neurogastroenterology and Motility Society Gastroparesis Cardinal Symptom Index-Daily Diary (ANMS GCSI-DD) Composite Score at Week 12 of the Treatment Period

ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD composite score included score of nausea, early satiety, upper abdominal pain, and postprandial fullness. The severity scores of these symptoms range from 0 (none) to 4 (very severe). The daily composite score was calculated by summing the scores on the 4 symptom items (nausea, early satiety, postprandial fullness, and upper abdominal pain) and then dividing by 4, that is the number of items within the composite score. Thus, the maximum daily composite score was (4 symptoms × maximum score 4 divided by 4) = 16/4 = 4. The ANMS GCSI-DD daily composite score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. Mixed-effects Model for Repeated Measures (MMRM) was used for the analysis.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the American Neurogastroenterology and Motility Society Gastroparesis Cardinal Symptom Index-Daily Diary (ANMS GCSI-DD) Composite Score at Week 12 of the Treatment Period-1.19 score on a scaleStandard Error 0.12
TAK-906 Maleate 5 mgChange From Baseline in the American Neurogastroenterology and Motility Society Gastroparesis Cardinal Symptom Index-Daily Diary (ANMS GCSI-DD) Composite Score at Week 12 of the Treatment Period-1.11 score on a scaleStandard Error 0.219
TAK-906 Maleate 25 mgChange From Baseline in the American Neurogastroenterology and Motility Society Gastroparesis Cardinal Symptom Index-Daily Diary (ANMS GCSI-DD) Composite Score at Week 12 of the Treatment Period-1.17 score on a scaleStandard Error 0.12
TAK-906 Maleate 50 mgChange From Baseline in the American Neurogastroenterology and Motility Society Gastroparesis Cardinal Symptom Index-Daily Diary (ANMS GCSI-DD) Composite Score at Week 12 of the Treatment Period-1.21 score on a scaleStandard Error 0.116
p-value: =0.61890% CI: [-0.34, 0.49]MMRM
p-value: =0.53390% CI: [-0.27, 0.29]MMRM
p-value: =0.44790% CI: [-0.3, 0.25]MMRM
Secondary

Change From Baseline in the ANMS GCI-DD Bloating Severity Scale Score at Week 12 of the Treatment Period

The bloating severity scale was scored from 0 to 4 (where 0 = no symptom and 4 = severe symptom). The daily total score can range from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. MMRM was used for analysis.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy. Overall number analyzed is the number of participants with data available for analysis.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the ANMS GCI-DD Bloating Severity Scale Score at Week 12 of the Treatment Period-1.15 score on a scaleStandard Error 0.137
TAK-906 Maleate 5 mgChange From Baseline in the ANMS GCI-DD Bloating Severity Scale Score at Week 12 of the Treatment Period-1.09 score on a scaleStandard Error 0.25
TAK-906 Maleate 25 mgChange From Baseline in the ANMS GCI-DD Bloating Severity Scale Score at Week 12 of the Treatment Period-1.26 score on a scaleStandard Error 0.136
TAK-906 Maleate 50 mgChange From Baseline in the ANMS GCI-DD Bloating Severity Scale Score at Week 12 of the Treatment Period-1.16 score on a scaleStandard Error 0.132
p-value: =0.59190% CI: [-0.41, 0.54]MMRM
p-value: =0.29190% CI: [-0.43, 0.21]MMRM
p-value: =0.47690% CI: [-0.33, 0.3]MMRM
Secondary

Change From Baseline in the ANMS GCSI-DD Early Satiety Symptom Score at Week 12 of the Treatment Period

ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD assesses nausea, early satiety, postprandial fullness, and upper abdominal pain on a severity score calculated from a 5-point Likert scale. The ANMS GCSI-DD early satiety symptom score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from Baseline indicated improvement. MMRM was used for the analysis.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy. Overall number analyzed is the number of participants with data available for analysis.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the ANMS GCSI-DD Early Satiety Symptom Score at Week 12 of the Treatment Period-1.26 score on a scaleStandard Error 0.136
TAK-906 Maleate 5 mgChange From Baseline in the ANMS GCSI-DD Early Satiety Symptom Score at Week 12 of the Treatment Period-1.25 score on a scaleStandard Error 0.248
TAK-906 Maleate 25 mgChange From Baseline in the ANMS GCSI-DD Early Satiety Symptom Score at Week 12 of the Treatment Period-1.17 score on a scaleStandard Error 0.135
TAK-906 Maleate 50 mgChange From Baseline in the ANMS GCSI-DD Early Satiety Symptom Score at Week 12 of the Treatment Period-1.33 score on a scaleStandard Error 0.131
p-value: =0.5190% CI: [-0.46, 0.47]MMRM
p-value: =0.67490% CI: [-0.23, 0.4]MMRM
p-value: =0.36790% CI: [-0.38, 0.25]MMRM
Secondary

Change From Baseline in the ANMS GCSI-DD Nausea Symptom Score at Week 12 of the Treatment Period

ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD assesses nausea, early satiety, postprandial fullness, and upper abdominal pain on a severity score calculated from a 5-point Likert scale. The ANMS GCSI-DD nausea symptom score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. MMRM was used for analysis.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy. Overall number analyzed is the number of participants with data available for analysis.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the ANMS GCSI-DD Nausea Symptom Score at Week 12 of the Treatment Period-1.42 score on a scaleStandard Error 0.134
TAK-906 Maleate 5 mgChange From Baseline in the ANMS GCSI-DD Nausea Symptom Score at Week 12 of the Treatment Period-1.36 score on a scaleStandard Error 0.245
TAK-906 Maleate 25 mgChange From Baseline in the ANMS GCSI-DD Nausea Symptom Score at Week 12 of the Treatment Period-1.36 score on a scaleStandard Error 0.133
TAK-906 Maleate 50 mgChange From Baseline in the ANMS GCSI-DD Nausea Symptom Score at Week 12 of the Treatment Period-1.40 score on a scaleStandard Error 0.129
p-value: =0.58490% CI: [-0.4, 0.52]MMRM
p-value: =0.62590% CI: [-0.25, 0.37]MMRM
p-value: =0.5490% CI: [-0.29, 0.33]MMRM
Secondary

Change From Baseline in the ANMS GCSI-DD Overall Severity of Gastroparesis Symptoms Score at Week 12 of the Treatment Period

The overall severity of gastroparesis symptoms is the participant report of the overall severity rating of their symptoms as entered daily in the ANMS GCSI-DD and at time of visit. Severity was rated on a 0 (none) to 4 (very severe) scale. Higher score values indicated more severe symptoms. MMRM was used for the analysis.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy. Overall number analyzed is the number of participants with data available for analysis.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the ANMS GCSI-DD Overall Severity of Gastroparesis Symptoms Score at Week 12 of the Treatment Period-1.20 score on a scaleStandard Error 0.13
TAK-906 Maleate 5 mgChange From Baseline in the ANMS GCSI-DD Overall Severity of Gastroparesis Symptoms Score at Week 12 of the Treatment Period-1.02 score on a scaleStandard Error 0.237
TAK-906 Maleate 25 mgChange From Baseline in the ANMS GCSI-DD Overall Severity of Gastroparesis Symptoms Score at Week 12 of the Treatment Period-1.22 score on a scaleStandard Error 0.129
TAK-906 Maleate 50 mgChange From Baseline in the ANMS GCSI-DD Overall Severity of Gastroparesis Symptoms Score at Week 12 of the Treatment Period-1.25 score on a scaleStandard Error 0.125
p-value: =0.74290% CI: [-0.27, 0.62]MMRM
p-value: =0.46190% CI: [-0.32, 0.28]MMRM
p-value: =0.37690% CI: [-0.36, 0.24]MMRM
Secondary

Change From Baseline in the ANMS GCSI-DD Postprandial Fullness Symptom Score at Week 12 of the Treatment Period

ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD assesses nausea, early satiety, postprandial fullness, and upper abdominal pain on a severity score calculated from a 5-point Likert scale. The ANMS GCSI-DD postprandial fullness symptom score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. MMRM was used for the analysis.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy. Overall number analyzed is the number of participants with data available for analysis.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the ANMS GCSI-DD Postprandial Fullness Symptom Score at Week 12 of the Treatment Period-1.32 score on a scaleStandard Error 0.139
TAK-906 Maleate 5 mgChange From Baseline in the ANMS GCSI-DD Postprandial Fullness Symptom Score at Week 12 of the Treatment Period-1.26 score on a scaleStandard Error 0.253
TAK-906 Maleate 25 mgChange From Baseline in the ANMS GCSI-DD Postprandial Fullness Symptom Score at Week 12 of the Treatment Period-1.27 score on a scaleStandard Error 0.138
TAK-906 Maleate 50 mgChange From Baseline in the ANMS GCSI-DD Postprandial Fullness Symptom Score at Week 12 of the Treatment Period-1.35 score on a scaleStandard Error 0.134
p-value: =0.58790% CI: [-0.41, 0.54]MMRM
p-value: =0.690% CI: [-0.27, 0.37]MMRM
p-value: =0.44690% CI: [-0.34, 0.29]MMRM
Secondary

Change From Baseline in the ANMS GCSI-DD Recorded Vomiting Frequency at Week 12 of the Treatment Period

Vomiting frequency was collected as the number of times a participant vomited in a 24-hour period i.e., vomiting episodes using the ANMS GCSI-DD. The daily score was averaged over 7 days. Higher scores indicate more severe symptoms. MMRM was used for the analysis.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy. Overall number analyzed is the number of participants with data available for analysis.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the ANMS GCSI-DD Recorded Vomiting Frequency at Week 12 of the Treatment Period-0.71 vomiting episodes/dayStandard Error 0.236
TAK-906 Maleate 5 mgChange From Baseline in the ANMS GCSI-DD Recorded Vomiting Frequency at Week 12 of the Treatment Period-0.44 vomiting episodes/dayStandard Error 0.421
TAK-906 Maleate 25 mgChange From Baseline in the ANMS GCSI-DD Recorded Vomiting Frequency at Week 12 of the Treatment Period-0.48 vomiting episodes/dayStandard Error 0.234
TAK-906 Maleate 50 mgChange From Baseline in the ANMS GCSI-DD Recorded Vomiting Frequency at Week 12 of the Treatment Period-0.63 vomiting episodes/dayStandard Error 0.231
p-value: =0.70990% CI: [-0.53, 1.07]MMRM
p-value: =0.7690% CI: [-0.31, 0.78]MMRM
p-value: =0.59190% CI: [-0.47, 0.62]MMRM
Secondary

Change From Baseline in the ANMS GCSI-DD Total Score at Week 12 of the Treatment Period

Daily total score was calculated by summing scores on each of the 5 symptom items in ANMS GCSI-DD (nausea, early satiety, postprandial fullness, upper abdominal pain and vomiting) plus the bloating severity item and then dividing by 6. When calculating total score, vomiting frequency was scored from 0 to 4 (where 0=no vomiting and 4=four or more episodes of vomiting). The daily total score can range from 0 to 4 with higher scores reflecting greater symptom severity. MMRM was used for analyses.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy. Overall number analyzed is the number of participants with data available for analysis.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the ANMS GCSI-DD Total Score at Week 12 of the Treatment Period-1.10 score on a scaleStandard Error 0.108
TAK-906 Maleate 5 mgChange From Baseline in the ANMS GCSI-DD Total Score at Week 12 of the Treatment Period-1.00 score on a scaleStandard Error 0.196
TAK-906 Maleate 25 mgChange From Baseline in the ANMS GCSI-DD Total Score at Week 12 of the Treatment Period-1.09 score on a scaleStandard Error 0.107
TAK-906 Maleate 50 mgChange From Baseline in the ANMS GCSI-DD Total Score at Week 12 of the Treatment Period-1.11 score on a scaleStandard Error 0.104
p-value: =0.67590% CI: [-0.27, 0.47]MMRM
p-value: =0.53190% CI: [-0.24, 0.26]MMRM
p-value: =0.47390% CI: [-0.26, 0.24]MMRM
Secondary

Change From Baseline in the ANMS GCSI-DD Upper Abdominal Pain Symptom Score at Week 12 of the Treatment Period

ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis. The ANMS GCSI-DD assesses nausea, early satiety, postprandial fullness, and upper abdominal pain on a severity score calculated from a 5-point Likert scale. The ANMS GCSI-DD upper abdominal pain symptom score ranged from 0 to 4 with higher scores reflecting greater symptom severity. The negative change from baseline indicates improvement. MMRM was used for the analysis.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy. Overall number analyzed is the number of participants with data available for analysis.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the ANMS GCSI-DD Upper Abdominal Pain Symptom Score at Week 12 of the Treatment Period-0.72 score on a scaleStandard Error 0.118
TAK-906 Maleate 5 mgChange From Baseline in the ANMS GCSI-DD Upper Abdominal Pain Symptom Score at Week 12 of the Treatment Period-0.68 score on a scaleStandard Error 0.214
TAK-906 Maleate 25 mgChange From Baseline in the ANMS GCSI-DD Upper Abdominal Pain Symptom Score at Week 12 of the Treatment Period-0.90 score on a scaleStandard Error 0.117
TAK-906 Maleate 50 mgChange From Baseline in the ANMS GCSI-DD Upper Abdominal Pain Symptom Score at Week 12 of the Treatment Period-0.76 score on a scaleStandard Error 0.114
p-value: =0.56290% CI: [-0.37, 0.44]MMRM
p-value: =0.13890% CI: [-0.46, 0.09]MMRM
p-value: =0.39490% CI: [-0.32, 0.23]MMRM
Secondary

Change From Baseline in the Patient Assessment of Upper Gastrointestinal Disorders-Symptom Severity Index (PAGI-SYM) Total Score at Week 12 of the Treatment Period

The PAGI-SYM total score is defined as the mean of 6 PAGI-SYM subscale scores from 20 items. A 6-point Likert response scale, ranging from 0 (none) to 5 (very severe), is used to measure symptom severity in participants with upper GI disorders. The negative change from baseline indicates improvement. MMRM was used for analysis.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy. Overall number analyzed is the number of participants with data available for analysis.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboChange From Baseline in the Patient Assessment of Upper Gastrointestinal Disorders-Symptom Severity Index (PAGI-SYM) Total Score at Week 12 of the Treatment Period-1.33 score on a scaleStandard Error 0.141
TAK-906 Maleate 5 mgChange From Baseline in the Patient Assessment of Upper Gastrointestinal Disorders-Symptom Severity Index (PAGI-SYM) Total Score at Week 12 of the Treatment Period-1.25 score on a scaleStandard Error 0.265
TAK-906 Maleate 25 mgChange From Baseline in the Patient Assessment of Upper Gastrointestinal Disorders-Symptom Severity Index (PAGI-SYM) Total Score at Week 12 of the Treatment Period-1.51 score on a scaleStandard Error 0.142
TAK-906 Maleate 50 mgChange From Baseline in the Patient Assessment of Upper Gastrointestinal Disorders-Symptom Severity Index (PAGI-SYM) Total Score at Week 12 of the Treatment Period-1.57 score on a scaleStandard Error 0.136
p-value: =0.60190% CI: [-0.42, 0.57]MMRM
p-value: =0.18190% CI: [-0.51, 0.15]MMRM
p-value: =0.11490% CI: [-0.56, 0.09]MMRM
Secondary

Percentage of Participants With at Least 50% Reduction From Baseline in ANMS GCSI-DD Composite Score at Week 12

ANMS GCSI-DD is a patient-reported outcome instrument for a symptom-based clinical trial endpoint in gastroparesis . The ANMS GCSI-DD composite score included score of nausea, early satiety, upper abdominal pain and postprandial fullness. The severity scores of these symptoms range from 0 (none) to 4 (very severe). The daily composite score was calculated by summing the scores on the 4 symptom items (nausea, early satiety, postprandial fullness, and upper abdominal pain) and then dividing by 4, that is the number of items within the composite score. Thus, the maximum daily composite score was (4 symptoms × maximum score 4 divided by 4) = 16/4 = 4. The ANMS GCSI-DD daily composite score ranged from 0 to 4 with higher scores reflecting greater symptom severity.

Time frame: Baseline and Week 12

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy.

ArmMeasureValue (NUMBER)
PlaceboPercentage of Participants With at Least 50% Reduction From Baseline in ANMS GCSI-DD Composite Score at Week 1242.5 percentage of participants
TAK-906 Maleate 5 mgPercentage of Participants With at Least 50% Reduction From Baseline in ANMS GCSI-DD Composite Score at Week 1239.1 percentage of participants
TAK-906 Maleate 25 mgPercentage of Participants With at Least 50% Reduction From Baseline in ANMS GCSI-DD Composite Score at Week 1247.2 percentage of participants
TAK-906 Maleate 50 mgPercentage of Participants With at Least 50% Reduction From Baseline in ANMS GCSI-DD Composite Score at Week 1241.9 percentage of participants
p-value: =0.60790% CI: [0.39, 1.96]Logistic Regression
p-value: =0.28390% CI: [0.7, 2.1]Logistic Regression
p-value: =0.52790% CI: [0.56, 1.69]Logistic Regression
Secondary

Percentage of Symptomatic Weeks

Symptomatic weeks are weeks with average composite symptom score assessed as \>mild \[ANMS GCSI-DD score ≥2\] during 12 weeks of treatment. Analysis of variance (ANOVA) was used for the analysis.

Time frame: Up to 12 weeks

Population: FAS included all participants who were randomized, received at least 1 dose of study drug, and have a baseline value and at least 1 valid postbaseline value for assessment of primary efficacy.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboPercentage of Symptomatic Weeks54.89 percentage of weeksStandard Error 4.746
TAK-906 Maleate 5 mgPercentage of Symptomatic Weeks46.42 percentage of weeksStandard Error 8.474
TAK-906 Maleate 25 mgPercentage of Symptomatic Weeks50.03 percentage of weeksStandard Error 4.781
TAK-906 Maleate 50 mgPercentage of Symptomatic Weeks51.31 percentage of weeksStandard Error 4.714
p-value: =0.19290% CI: [-24.5, 7.57]ANOVA
p-value: =0.23690% CI: [-15.98, 6.27]ANOVA
p-value: =0.29790% CI: [-14.62, 7.47]ANOVA

Source: ClinicalTrials.gov · Data processed: Feb 19, 2026