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Bacterial Genomic Sequencing in Overactive Bladder

The Effect of Short Term Solifenacin for Overactive Bladder on the Female Urinary Microbiome

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01642277
Enrollment
134
Registered
2012-07-17
Start date
2012-07-31
Completion date
2014-08-31
Last updated
2015-12-07

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

Conditions

Overactive Bladder

Keywords

Overactive Bladder, OAB, Urinary Tract Infection, UTI, Microbiome, Bacteria, Solifenacin, 16S rRNA sequence

Brief summary

No one really knows what causes overactive bladder syndrome (OAB). Urinary tract infection (UTI)causes similar symptoms to OAB with the difference being the presence of bacteria, as evidenced by routine microbiology cultures. Recent work by the group on the genitourinary microbiome (GUM) has shown that female urine, even in the absence of culture evidence of bacteria does have evidence of bacterial DNA. Bacterial 16S rRNA can be isolated from urine and sequenced to identify bacterial species present in urine. From this the investigators can hypothesize that urinary bacteria contribute to urinary symptoms and that there is a difference in the bacterial communities in the urine of women who respond to Solifenacin, a drug used to treat OAB, versus those that do not.

Detailed description

This is a prospective study with two groups: Women who have accepted a clinical recommendation for OAB treatment with solifenacin and a comparator (control) group of women unaffected by OAB. All women will have a baseline urine assessment with bacterial genome sequencing. Solifenacin treated patients will also have urine assessments with bacterial genomic sequencing at 4 and 12 weeks on treatment.

Interventions

DRUGSolifenacin

5 mg for 4 weeks with option to increase to 10 mg for an additional 8 weeks

Sponsors

Astellas Pharma US, Inc.
CollaboratorINDUSTRY
Loyola University
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 89 Years
Healthy volunteers
Yes

Inclusion criteria

Controls: Women without bother from urinary symptoms will be screened for potential study participation using the pelvic floor distress inventory (PFDI). Women with negative urinary responses will be further screened for participation using the following eligibility criteria: * no anticholinergic medications for bladder conditions, * no antibiotic exposure in the past 4 weeks for any reason, * no immunologic deficiency, * no pelvic malignancy or pelvic radiation, and * Untreated symptomatic POP \> POP-Q Stage II. OAB cohort: Women with bother from overactive bladder symptoms will be screened for potential study participation using the pelvic floor distress inventory (PFDI). Women with positive urinary responses for urge predominant symptoms will be further screened for participation using the following eligibility criteria: * willing to take Solifenacin as treatment for OAB, * no neurological disease known to affect the lower urinary tract, * no current UTI (based on urine dipstick) or recurrent UTI, * no antibiotic exposure in the past 4 weeks for any reason, * no immunologic deficiency, * no pelvic malignancy or pelvic radiation, * untreated symptomatic POP \> POP-Q Stage II, * no contraindications to receiving Solifenacin.

Exclusion criteria

* Women who are of child-bearing potential who are pregnant, nursing, intending to become pregnant during the study or not practicing a reliable form of contraception are also excluded.

Design outcomes

Primary

MeasureTime frameDescription
Bacterial Genomic Sequencing12 weeksParticipants were classified into Low Biomass, Lactobacillus, Gardnerella, Diverse, and Other urotypes based on the bacterial DNA at baseline.

Secondary

MeasureTime frameDescription
Assessment of Overactive Bladder Questionnaire (OABQ)End of study (Week 12)The Overactive Bladder Questionnaire (OAB-q) was developed to assess symptom bother and the impact of overactive bladder (OAB) on health-related quality of life (HRQL). The instrument comprises 33 items. Response options for the symptom frequency and HRQL items are presented as 6-point Likert scales ranging from 'none of the time' to 'all of the time' for symptom frequency (and 'not at all' to 'a very great deal' for symptom bother). From these 33 items, six sub-scales are assessed separately: (1) OAB symptom severity, (2) Coping with OAB symptoms, (3) Concern for OAB symptoms, (4) Sleep as a function of OAB symptoms, (5) Social functioning as a consequence of OAB symptoms, and (6) Health related quality of life (HRQL) as a function of OAB symptoms. Each sub-scale score ranges from 0 to 100 (where higher scores indicate more severe OAB symptoms and lower scores indicate minimal symptom severity).
Assessment of Pelvic Floor Disease Inventory (PFDI) Questionnaire12 weeksThe PFDI comprises 46 items on a 4-point symptom severity scale ranging from 1 = Not at all to 4 = Quite a bit. From these items, 13 separate sub-scales are reported: (1) Obstructive discomfort, (2) Irritation, (3) Stress resulting from urinal distress, (4) A general sub-scale for pelvic organ prolapse distress, (5) An anterior sub-scale for pelvic organ prolapse distress, (6) A posterior sub-scale for pelvic organ prolapse distress, (7) An obstructive sub-scale for colorectal anal distress, (8) Incontinence, (9) Pain, and (10) A rectal prolapse sub-scale for colorectal anal distress. For each of these sub-scales, scores from from 0 to 100 (where higher scores indicate greater symptom severity). There are three additional sub-scales: (11) The urinary distress inventory, (12) The pelvic organ distress inventory, and (13) The colorectal distress inventory. Each of these ranges from 0 to 400 (with higher scores indicating greater symptom severity).

Countries

United States

Participant flow

Recruitment details

Recruitment began on July 16th, 2012 and ended on May 22nd, 2014 (i.e., 22.2 months). Participants were recruited during their outpatient appointments to the Urogynecology Clinic at Loyola University Medical Center (Maywood, IL) by a member of the research team.

Pre-assignment details

This was a 12-week open label study with no randomization scheme. Following diagnosis, patients were administered 5 mg daily solifenacin. At the 4-week visit, if a participant's symptoms were adequately controlled (response), she continued at dose for the study duration. If a participant reported no improvement, the dose was increased to 10 mg.

Participants by arm

ArmCount
Urinary Urge Incontinence
Seventy-four (n = 74) women received 5mg daily solifenacin (with an option to increase to 10mg daily solifenacin at 4 weeks) for the treatment of urinary urge incontinence (UUI).
74
Non-Urinary Urge Incontinence
Sixty (n = 60) women without UUI were evaluated at baseline only (week 0) in order to serve as a control cohort. These women never received study therapy (i.e., 5-10mg daily solifenacin).
60
Total134

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event100
Overall StudyPhysician Decision20
Overall StudyProtocol Violation10
Overall StudyWithdrawal by Subject110

Baseline characteristics

CharacteristicTotalNon-Urinary Urge IncontinenceUrinary Urge Incontinence
Age, Continuous56.04 years
STANDARD_DEVIATION 14.34
49 years
STANDARD_DEVIATION 14.7
61.5 years
STANDARD_DEVIATION 11.5
Body Mass Index30.59 kg/m2
STANDARD_DEVIATION 7.61
27.9 kg/m2
STANDARD_DEVIATION 5.5
32.7 kg/m2
STANDARD_DEVIATION 8.4
Coronary Artery Disease
No
124 participants59 participants65 participants
Coronary Artery Disease
Yes
10 participants1 participants9 participants
Diabetes
No
125 participants58 participants67 participants
Diabetes
Yes
9 participants2 participants7 participants
Estrogen Status
Negative
39 participants32 participants7 participants
Estrogen Status
Positive
91 participants26 participants65 participants
Estrogen Status
Unknown
4 participants2 participants2 participants
Hypertension
No
97 participants49 participants48 participants
Hypertension
Yes
37 participants11 participants26 participants
Marital Status
Divorced
15 participants6 participants9 participants
Marital Status
Married
75 participants37 participants38 participants
Marital Status
Separated
4 participants1 participants3 participants
Marital Status
Single
25 participants15 participants10 participants
Marital Status
Widowed
15 participants1 participants14 participants
Prior Treatment for OAB
No prior treatment
97 participants60 participants37 participants
Prior Treatment for OAB
Prior Treatment
37 participants0 participants37 participants
Race/Ethnicity, Customized
Asian
1 participants1 participants0 participants
Race/Ethnicity, Customized
Black
25 participants12 participants13 participants
Race/Ethnicity, Customized
Hispanic
9 participants4 participants5 participants
Race/Ethnicity, Customized
White
99 participants43 participants56 participants
Region of Enrollment
United States
134 participants60 participants74 participants
Sequencing Urotypes at Baseline
Diverse urotype
12 participants4 participants8 participants
Sequencing Urotypes at Baseline
Gardnerella urotype
12 participants4 participants8 participants
Sequencing Urotypes at Baseline
Lactobacillus urotype
31 participants16 participants15 participants
Sequencing Urotypes at Baseline
Low biomass
71 participants34 participants37 participants
Sequencing Urotypes at Baseline
Other urotypes
8 participants2 participants6 participants
Sex: Female, Male
Female
134 Participants60 Participants74 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants
Smoking
Non-Smoker
124 participants56 participants68 participants
Smoking
Smoker
10 participants4 participants6 participants
Vaginal Parity2.00 Births2.00 Births2.00 Births

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
10 / 740 / 0
serious
Total, serious adverse events
0 / 740 / 0

Outcome results

Primary

Bacterial Genomic Sequencing

Participants were classified into Low Biomass, Lactobacillus, Gardnerella, Diverse, and Other urotypes based on the bacterial DNA at baseline.

Time frame: 12 weeks

Population: This was a completer analysis comprising participants who completed 12 weeks of treatment (n = 50).

ArmMeasureGroupValue (NUMBER)
Urinary Urge IncontinenceBacterial Genomic SequencingLactobacillus urotype11 participants
Urinary Urge IncontinenceBacterial Genomic SequencingLow biomass25 participants
Urinary Urge IncontinenceBacterial Genomic SequencingDiverse urotype3 participants
Urinary Urge IncontinenceBacterial Genomic SequencingGardnerella urotype6 participants
Urinary Urge IncontinenceBacterial Genomic SequencingOther urotypes3 participants
Secondary

Assessment of Overactive Bladder Questionnaire (OABQ)

The Overactive Bladder Questionnaire (OAB-q) was developed to assess symptom bother and the impact of overactive bladder (OAB) on health-related quality of life (HRQL). The instrument comprises 33 items. Response options for the symptom frequency and HRQL items are presented as 6-point Likert scales ranging from 'none of the time' to 'all of the time' for symptom frequency (and 'not at all' to 'a very great deal' for symptom bother). From these 33 items, six sub-scales are assessed separately: (1) OAB symptom severity, (2) Coping with OAB symptoms, (3) Concern for OAB symptoms, (4) Sleep as a function of OAB symptoms, (5) Social functioning as a consequence of OAB symptoms, and (6) Health related quality of life (HRQL) as a function of OAB symptoms. Each sub-scale score ranges from 0 to 100 (where higher scores indicate more severe OAB symptoms and lower scores indicate minimal symptom severity).

Time frame: End of study (Week 12)

Population: Participants who received solifenacin were asked to complete the OABQ at 12 weeks in order to assess overactive bladder symptoms.

ArmMeasureGroupValue (MEDIAN)
Urinary Urge IncontinenceAssessment of Overactive Bladder Questionnaire (OABQ)Symptom Severity Score17.50 units on a scale
Urinary Urge IncontinenceAssessment of Overactive Bladder Questionnaire (OABQ)Coping Score92.50 units on a scale
Urinary Urge IncontinenceAssessment of Overactive Bladder Questionnaire (OABQ)Concern Score97.14 units on a scale
Urinary Urge IncontinenceAssessment of Overactive Bladder Questionnaire (OABQ)Sleep Score92.00 units on a scale
Urinary Urge IncontinenceAssessment of Overactive Bladder Questionnaire (OABQ)Social Score100.00 units on a scale
Urinary Urge IncontinenceAssessment of Overactive Bladder Questionnaire (OABQ)Health Related Quality of Life (HRQL)92.80 units on a scale
Solifenacin Non-ResponderAssessment of Overactive Bladder Questionnaire (OABQ)Social Score96.00 units on a scale
Solifenacin Non-ResponderAssessment of Overactive Bladder Questionnaire (OABQ)Symptom Severity Score37.50 units on a scale
Solifenacin Non-ResponderAssessment of Overactive Bladder Questionnaire (OABQ)Sleep Score84.00 units on a scale
Solifenacin Non-ResponderAssessment of Overactive Bladder Questionnaire (OABQ)Coping Score80.00 units on a scale
Solifenacin Non-ResponderAssessment of Overactive Bladder Questionnaire (OABQ)Health Related Quality of Life (HRQL)76.00 units on a scale
Solifenacin Non-ResponderAssessment of Overactive Bladder Questionnaire (OABQ)Concern Score82.86 units on a scale
Comparison: For symptom-severity score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size and non-normal distributions of symptom severity scores. The null hypothesis is that there is no difference between the two groups in symptom severity, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) symptom severity than the other group.p-value: 0.052Wilcoxon (Mann-Whitney)
Comparison: For coping score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size, non-normal distributions, and outliers of coping scores. The null hypothesis is that there is no difference between the two groups in coping, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) coping than the other group.p-value: 0.04Wilcoxon (Mann-Whitney)
Comparison: For the concern score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size, non-normal distributions, and outlier of the concern scores. The null hypothesis is that there is no difference between the two groups in their concern, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) concern than the other group.p-value: 0.03Wilcoxon (Mann-Whitney)
Comparison: For the sleep score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size, non-normal distributions, and outliers of sleep scores. The null hypothesis is that there is no difference between the two groups in sleep scores, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) sleep scores than the other group.p-value: 0.37Wilcoxon (Mann-Whitney)
Comparison: For social score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size, non-normal distributions, and outliers of social scores. The null hypothesis is that there is no difference between the two groups in social scores, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) social scores than the other group.p-value: 0.04Wilcoxon (Mann-Whitney)
Comparison: For the overall health related quality of life (HRQL) score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size, non-normal distributions, and outliers of HRQL scores. The null hypothesis is that there is no difference between the two groups in health related quality of life, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) health realted quality of life than the other group.p-value: 0.04Wilcoxon (Mann-Whitney)
Secondary

Assessment of Pelvic Floor Disease Inventory (PFDI) Questionnaire

The PFDI comprises 46 items on a 4-point symptom severity scale ranging from 1 = Not at all to 4 = Quite a bit. From these items, 13 separate sub-scales are reported: (1) Obstructive discomfort, (2) Irritation, (3) Stress resulting from urinal distress, (4) A general sub-scale for pelvic organ prolapse distress, (5) An anterior sub-scale for pelvic organ prolapse distress, (6) A posterior sub-scale for pelvic organ prolapse distress, (7) An obstructive sub-scale for colorectal anal distress, (8) Incontinence, (9) Pain, and (10) A rectal prolapse sub-scale for colorectal anal distress. For each of these sub-scales, scores from from 0 to 100 (where higher scores indicate greater symptom severity). There are three additional sub-scales: (11) The urinary distress inventory, (12) The pelvic organ distress inventory, and (13) The colorectal distress inventory. Each of these ranges from 0 to 400 (with higher scores indicating greater symptom severity).

Time frame: 12 weeks

Population: Participants who received solifenacin were asked to complete the PFDI questionnaire at 12 weeks in order to assess certain bowel, bladder, and pelvic symptoms.

ArmMeasureGroupValue (MEDIAN)
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireStress Score8.33 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnairePelvic Organ Prolapse Distress Inventory Score20.83 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireGeneral Score7.14 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireObstructive Score0 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireIrritative Score12.50 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnairePain Irritation Score10.71 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireAnterior Score8.33 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireRectal Prolapse0 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireUrinary Distress Inventory Score40.19 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireColo-Rectal-Anal Distress Inventory Score17.86 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnairePosterior Score0 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireIncontinence Score0 units on a scale
Urinary Urge IncontinenceAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireObstructive Discomfort Score5.77 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireIncontinence Score10.00 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireObstructive Discomfort Score7.69 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireIrritative Score32.50 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireStress Score16.67 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireUrinary Distress Inventory Score60.26 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireGeneral Score14.29 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireAnterior Score8.33 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnairePosterior Score16.67 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnairePelvic Organ Prolapse Distress Inventory Score47.62 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireObstructive Score16.67 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnairePain Irritation Score10.71 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireRectal Prolapse0 units on a scale
Solifenacin Non-ResponderAssessment of Pelvic Floor Disease Inventory (PFDI) QuestionnaireColo-Rectal-Anal Distress Inventory Score42.86 units on a scale
Comparison: For the obstructive discomfort score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size in the non-responder group (n = 13). The null hypothesis is that there is no difference between the two groups in obstructive discomfort, and and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) obstructive discomfort than the other group.p-value: 0.46Wilcoxon (Mann-Whitney)
Comparison: For the irritative score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size in the non-responder group (n = 13). The null hypothesis is that there is no difference between the two groups in irritation, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) irritation than the other group.p-value: 0.07Wilcoxon (Mann-Whitney)
Comparison: For the stress score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size in the non-responder group (n = 13). The null hypothesis is that there is no difference between the two groups in stress, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) stress than the other group.p-value: 0.11Wilcoxon (Mann-Whitney)
Comparison: For the urinary distress inventory score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size in the non-responder group (n = 13). The null hypothesis is that there is no difference between the two groups in urinary distress, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) urinary distress than the other group.p-value: 0.09Wilcoxon (Mann-Whitney)
Comparison: For the general score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size in the non-responder group (n = 13). The null hypothesis is that there is no difference between the two groups in general pelvic floor disease severity, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) general pelvic floor disease severity than the other group.p-value: 0.09Wilcoxon (Mann-Whitney)
Comparison: For the anterior score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size in the non-responder group (n = 13). The null hypothesis is that there is no difference between the two groups in anterior pelvic floor disease severity, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) anterior pelvic floor disease severity than the other group.p-value: 0.82Wilcoxon (Mann-Whitney)
Comparison: For the posterior score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size in the non-responder group (n = 13). The null hypothesis is that there is no difference between the two groups in posterior pelvic floor disease severity, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) posterior pelvic floor disease severity than the other group.p-value: 0.06Wilcoxon (Mann-Whitney)
Comparison: For the pelvic organ prolapse distress score, the non-parametric Mann-Whitney test was used to compare the responder and non-responder groups due to low sample size in the non-responder group (n = 13). The null hypothesis is that there is no difference between the two groups in pelvic organ prolapse distress, and the two-sided alternative hypothesis is that one of the two groups has higher (or lower) pelvic organ prolapse distress than the other group.p-value: 0.07Wilcoxon (Mann-Whitney)

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