ClinicalTrials.gg
RecruitingNCT00389142Updated Dec 16, 2025

Identifying Genetic Causes of IC/BPS

An observational study in Interstitial Cystitis and Bladder Pain Syndrome, sponsored by Boston Children's Hospital. Recruiting at 1 site in United States. Open to participants aged 1 Year and older. Per ClinicalTrials.gov, last updated 2025-12-16.

Sponsored by Boston Children's Hospital · Observational

From the registry’s dates

  • Started Jan 2006; still recruiting 20 years 9 months later.
Study type
Observational
Model
Family-based
Time perspective
Prospective
Enrollment
1,000
Ages
1 Year and older
Sex
All
01

Study summary

Interstitial cystitis (IC), also called Bladder Pain syndrome (BPS) is a common condition with no known cause or cure. Twin studies and family accounts have suggested that the condition may be genetic or passed down (inherited) from one generation to another.

In this study, the investigators are collecting genetic material via blood or saliva and medical information from families in North America in an attempt to identify genetic factors that may cause IC/BPS. The investigators are enrolling inviduals with IC/BPS and their family members (family members with and without IC like symptoms). Travel to Boston not required.

Read the detailed description

The investigators are trying to identify a genetic cause of interstitial cystitis (IC)/bladder pain syndrome (BPS). The investigators are looking to enroll individuals with a clinical diagnosis of IC/BPS and their family member. The investigators are attempting to determine if there is a connection between symptoms of IC/PBS and changes in specific genes or a pathway of connected genes. The investigators will use several genetic technologies including but not limited to; linkage analysis, genome sequencing, RNAseq and candidate gene studies to try to identify the cause of IC/BPS. Once the investigators identify the cause of IC/BPS they will be able to identify and design more effective treatments for affected individuals. The investigators are looking for families with IC/BPS symptoms to give a DNA sample (from blood/saliva), urine samples, and answer several questionnaires. Travel to Boston NOT necessary.

02

Conditions studied

  • Interstitial Cystitis
  • Bladder Pain Syndrome

Keywords

  • pelvic pain
  • urinary frequency
  • painful bladder
  • urinary urgency
03

In context

Cystitis, Interstitial

236 studies on the registry are indexed under Cystitis, Interstitial; 35 are open to participants now.

This study's planned enrollment of 1,000 is above the median of 100 across 63 observational studies indexed under Cystitis, Interstitial.

Browse Cystitis, Interstitial studies →

Lead sponsor

Boston Children's Hospital is the lead sponsor of 608 studies on the registry; 147 are open to participants now.

Of its 32 completed or terminated interventional studies of FDA-regulated products, 19 (59%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
1 Year and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The investigators are collecting patients throughout North America (including the United States and Canada)

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosis of IC/BPS
  • Males and females of any age
  • Urinary frequency - more than 1X/hour, and/or
  • Dysuria, and/or
  • Pelvic, suprapubic, or abdominal pain - for 3 months or longer
  • Nocturia
  • Normal urinary stream (by history)
  • No evidence of active bacterial UTI (no pyuria \& negative urinary culture for last 3 months)
  • First degree relative of someone with above symptoms

Exclusion criteria

Exclusion Criteria:

  • Major structural/anatomical urinary tract abnormalities by ultrasound
  • Underlying inborn conditions affecting the urinary tract
  • Surgery/chemotherapy affected pelvic area
  • GI or GU cancers
  • Severe Constipation in children only
05

Study design

Observational model
Family-based
Time perspective
Prospective
Enrollment
1,000 participants (estimated)
Patient registry
No
Biospecimen retention
Samples with dna

Groups and cohorts

  • 1 cohort

    All participants will undergo genome sequencing and urinalysis studies.

06

What researchers measure

Primary outcomes

  1. observational study

    Outcome is candidate or causative genes for causing IC/BPS.

    Time frame: through study completion, average of 10 years

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Dimitrakov JD. A case of familial clustering of interstitial cystitis and chronic pelvic pain syndrome. Urology. 2001 Aug;58(2):281. doi: 10.1016/s0090-4295(01)01138-4. PubMed 11489726 ↗
  • Estrella E, Rockowitz S, Thorne M, Smith P, Petit J, Zehnder V, Yu RN, Bauer S, Berde C, Agrawal PB, Beggs AH, Gharavi AG, Kunkel L, Brownstein CA. Mendelian Disorders in an Interstitial Cystitis/Bladder Pain Syndrome Cohort. Adv Genet (Hoboken). 2022 Nov 27;4(1):2200013. doi: 10.1002/ggn2.202200013. eCollection 2023 Mar. PubMed 36910591 ↗

Individual participant data

Plan to share: Yes — De-identified data from individual participants may be shared with other researchers. Other researchers will be approved by the internal review board at BCH.

Supporting information: Study protocol, Statistical analysis plan, Informed consent form

Time frame: We will store data and samples indefinitely and may share samples/data with future collaborators.

Access criteria: Data may be shared throughout the duration of the study. Collaborators will share de-identified data provided by study staff.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 16, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00389142
Responsible party
Catherine Brownstein (Assistant Professor of Genetics and Pediatrics, Harvard Medical School, Boston Children's Hospital) — Principal investigator
First posted
Oct 18, 2006
Start date
Jan 15, 2006
Primary completion
Dec 31, 2030 (estimated)
Completion
Dec 31, 2030 (estimated)
Last update
Dec 16, 2025

Study contacts

Elicia A Estrella, MS, LCGC
Contact
elicia.estrella@childrens.harvard.edu
617-919-4552
Stephanie Brewster, MS, LCGC
Contact
Stephanie.Brewster@childrens.harvard.edu
Catherine Brownstein, Ph.D.
principal investigator · Boston Children's Hosptial

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion