Skip to content

Real-world Evidence Study on Cystistat

Real-world Evidence Observational Study to Evaluate Performance and Safety of Intravesical Sodium Hyaluronate (Cystistat®) in the Treatment of Patients With Interstitial Cystitis (IC) / Bladder Pain Syndrome (BPS)

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05544695
Acronym
IC/BPS
Enrollment
74
Registered
2022-09-16
Start date
2022-10-21
Completion date
2024-07-29
Last updated
2026-01-09

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

Conditions

Interstitial Cystitis and Bladder Pain Syndrome

Brief summary

This study will be conducted with the aim of ensuring the continued acceptability of the benefit-risk ratio and confirming the safety and performance of the device throughout its expected lifetime. Cystistat is supplied as a 50 mL solution containing 40 mg of sodium hyaluronate. It is indicated for the temporary replacement of the GAG layer in the bladder.

Detailed description

Real-world evidence observational studies are considered as an expedient tool to reflect the use of a product under real life conditions.

Interventions

DEVICEintravesical sodium hyaluronate (Cystistat®)

Cystistat will be instilled into the bladder according to the instructions for use and in line with the routine clinical practice.

Sponsors

MEDA Pharma GmbH & Co. KG
Lead SponsorINDUSTRY

Study design

Observational model
OTHER
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* First prescription of Cystistat according to instructions for use. * Female patients of any ethnic origin with clinical diagnosis of interstitial cystitis (IC)/bladder pain syndrome (BPS). If in accordance with routine clinical practice at the site, ESSIC diagnostic criteria will be used. * Age: 18 years and older. * At least 6 months duration of bladder pain/discomfort symptom(s), e.g. constant bladder pain/discomfort or bladder pain/discomfort when voiding or as a burning sensation between voids as the bladder fills with urine. * At least one accompanying intermittent or persistent lower urinary tract symptom, such as urinary frequency, urgency, or nocturia during the previous 6 months. * Bladder Pain/ Interstitial Cystitis Symptom Score (BPIC-SS) \> 18 prior to first treatment. * Written informed consent.

Exclusion criteria

* Known hypersensitivity reactions to sodium hyaluronate. * Pregnancy / planned pregnancy or breastfeeding during the course of this NIS. * Known history of any GAG substitution therapy within the last 2 years. * Known history of fulguration or resection of Hunner's lesions. * Known diagnosis of recurrent urinary tract infection or overactive bladder. * Any other conditions or diseases that can cause similar symptoms, using information from medical history, physical examination findings, laboratory studies (e.g., urine bacterial culture), and other previously performed procedures (e.g., urodynamics, cystoscopy, laparoscopy, radiological studies). * Patients are not able to fulfil study requirements according to physician's opinion.

Design outcomes

Primary

MeasureTime frameDescription
Patient Global Assessment (PGA)Up to week 12For the primary analysis, a responder was defined as a participant who had an improvement on the PGA scale (i.e., PGA evaluated as markedly improved, moderately improved, or slightly improved. In case of slightly improved, participants were considered as responder only if the question Did therapy have a positive effect on your life, and would you undergo this treatment again? is answered with Yes.).

Secondary

MeasureTime frameDescription
Assessment of Bladder Pain/ Interstitial Cystitis Symptom ScoreUp to week 12 and additionally at Month 6The Bladder Pain/ Interstitial Cystitis Symptom Score (BPIC-SS) is a validated questionnaire for the measurement of IC/BPS symptoms. It contains 8 questions and the total score ranges from 0 to 38, with higher scores indicating a worse situation
Assessment of Visual Analogue Scale (VAS) for Bladder PainUp to week 12 and additionally at Month 6Patients will be asked to assess their bladder pain on the VAS using the question How was your bladder pain over the last 3 days?. The VAS will be an unmarked line ranging from 0 to 100 mm, where 0 = no pain and 100 = worst possible pain.
Assessment of Visual Analogue Scale (VAS) for Urinary Urgency.Up to week 12 and additionally at Month 6Patients will be asked to assess their urinary urgency on the VAS using the question How intense was urinary urgency over the last 3 days?. The VAS will be an unmarked line ranging from 0 to 100 mm, where 0 = no urgency and 100 = worst possible urgency.
Assessment of Visual Analogue Scale (VAS) for Quality of Life (QoL)Up to week 12 and additionally at Month 6Patients will be asked to assess QoL on the VAS using the question How good or bad would you rate your overall health condition throughout the last 3 days?. The VAS will be an unmarked line ranging from 0 to 100 mm, where 0 = the worst health you can imagine and 100 = the best health you can imagine.

Countries

Austria

Participant flow

Pre-assignment details

One patient did not receive study treatment due to withdrawal of consent.

Participants by arm

ArmCount
Single Arm: Cystistat® 40 mg/50 mL Solution
All participants received treatment per standard of care
73
Total73

Baseline characteristics

CharacteristicSingle Arm: Cystistat® 40 mg/50 mL Solution
Age, Continuous51.9 Years
STANDARD_DEVIATION 17.15
Bladder Pain/ Interstitial Cystitis Symptom Score29.3 score on a scale
STANDARD_DEVIATION 4.58
Race/Ethnicity, Customized
Ethnicity
African
1 Participants
Race/Ethnicity, Customized
Ethnicity
Caucasian
67 Participants
Race/Ethnicity, Customized
Ethnicity
Hispanic
5 Participants
Region of Enrollment
Europe
73 Participants
Sex: Female, Male
Female
72 Participants
Sex: Female, Male
Male
1 Participants
Visual Analogue Scale (bladder pain)74.7 units on a scale
STANDARD_DEVIATION 18.7
Visual Analogue Scale (quality of life)53.1 units on a scale
STANDARD_DEVIATION 28.9
Visual Analogue Scale (urinary urgency)75.2 units on a scale
STANDARD_DEVIATION 21.7

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 73
other
Total, other adverse events
13 / 73
serious
Total, serious adverse events
1 / 73

Outcome results

Primary

Patient Global Assessment (PGA)

For the primary analysis, a responder was defined as a participant who had an improvement on the PGA scale (i.e., PGA evaluated as markedly improved, moderately improved, or slightly improved. In case of slightly improved, participants were considered as responder only if the question Did therapy have a positive effect on your life, and would you undergo this treatment again? is answered with Yes.).

Time frame: Up to week 12

Population: Full analysis set

ArmMeasureValue (NUMBER)
Single Arm: Cystistat® 40 mg/50 mL SolutionPatient Global Assessment (PGA)90.1 percentage of participants (%)
Secondary

Assessment of Bladder Pain/ Interstitial Cystitis Symptom Score

The Bladder Pain/ Interstitial Cystitis Symptom Score (BPIC-SS) is a validated questionnaire for the measurement of IC/BPS symptoms. It contains 8 questions and the total score ranges from 0 to 38, with higher scores indicating a worse situation

Time frame: Up to week 12 and additionally at Month 6

Population: Full analysis set

ArmMeasureGroupValue (MEAN)Dispersion
Single Arm: Cystistat® 40 mg/50 mL SolutionAssessment of Bladder Pain/ Interstitial Cystitis Symptom ScoreEnd of treatment or latest week 12-13.8 score on a scale (change from baseline)Standard Deviation 8.62
Single Arm: Cystistat® 40 mg/50 mL SolutionAssessment of Bladder Pain/ Interstitial Cystitis Symptom ScoreMonth 6-15.3 score on a scale (change from baseline)Standard Deviation 9.15
Secondary

Assessment of Visual Analogue Scale (VAS) for Bladder Pain

Patients will be asked to assess their bladder pain on the VAS using the question How was your bladder pain over the last 3 days?. The VAS will be an unmarked line ranging from 0 to 100 mm, where 0 = no pain and 100 = worst possible pain.

Time frame: Up to week 12 and additionally at Month 6

Population: Full analysis set

ArmMeasureGroupValue (MEAN)Dispersion
Single Arm: Cystistat® 40 mg/50 mL SolutionAssessment of Visual Analogue Scale (VAS) for Bladder PainEnd of treatment or latest week 12-42.0 units on a scale (change from baseline)Standard Deviation 27.49
Single Arm: Cystistat® 40 mg/50 mL SolutionAssessment of Visual Analogue Scale (VAS) for Bladder PainMonth 6-49.2 units on a scale (change from baseline)Standard Deviation 29.69
Secondary

Assessment of Visual Analogue Scale (VAS) for Quality of Life (QoL)

Patients will be asked to assess QoL on the VAS using the question How good or bad would you rate your overall health condition throughout the last 3 days?. The VAS will be an unmarked line ranging from 0 to 100 mm, where 0 = the worst health you can imagine and 100 = the best health you can imagine.

Time frame: Up to week 12 and additionally at Month 6

Population: Full anaylsis set

ArmMeasureGroupValue (MEAN)Dispersion
Single Arm: Cystistat® 40 mg/50 mL SolutionAssessment of Visual Analogue Scale (VAS) for Quality of Life (QoL)End of treatment or latest week 1217.1 units on a scale (change from baseline)Standard Deviation 35.84
Single Arm: Cystistat® 40 mg/50 mL SolutionAssessment of Visual Analogue Scale (VAS) for Quality of Life (QoL)Month 627.2 units on a scale (change from baseline)Standard Deviation 33.27
Secondary

Assessment of Visual Analogue Scale (VAS) for Urinary Urgency.

Patients will be asked to assess their urinary urgency on the VAS using the question How intense was urinary urgency over the last 3 days?. The VAS will be an unmarked line ranging from 0 to 100 mm, where 0 = no urgency and 100 = worst possible urgency.

Time frame: Up to week 12 and additionally at Month 6

Population: Full analysis set

ArmMeasureGroupValue (MEAN)Dispersion
Single Arm: Cystistat® 40 mg/50 mL SolutionAssessment of Visual Analogue Scale (VAS) for Urinary Urgency.Month 6-49.2 units on a scale (change from baseline)Standard Deviation 30.48
Single Arm: Cystistat® 40 mg/50 mL SolutionAssessment of Visual Analogue Scale (VAS) for Urinary Urgency.End of treatment or latest week 12-39.3 units on a scale (change from baseline)Standard Deviation 28.9

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