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IIH-Advance: A randomised clinical trial to determine the effects of weight loss, induced by a weight loss drug (Tirzepatide), in adults with active idiopathic intracranial hypertension

A phase III multi-stage randomised controlled trial to determine the effects of weight loss, induced by Tirzepatide, in adults with active idiopathic intracranial hypertension

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN22446424
Enrollment
86
Registered
2026-01-19
Start date
2026-01-19
Completion date
Unknown
Last updated
2026-02-02

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

Conditions

Idiopathic intracranial hypertension Circulatory System

Interventions

Design Overview IIH-Advance is a phase III, multi-stage, randomised controlled trial designed to evaluate whether weight loss induced by tirzepatide improves disease activity in adults with active idi

Sponsors

University of Birmingham
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 99 Years

Inclusion criteria

Inclusion criteria: 1. Confirmed diagnosis of IIH as defined by the IIH consensus criteria 2. Age 18 years or older 3. No evidence of sight-threatening papilloedema requiring urgent surgical intervention 4. Presence of papilloedema in at least one eye measured by OCT RNFL 5. Body Mass Index (BMI) greater than or equal to: • 30.0 kg/sqm or • 27.0 kg/sqm with IIH associated with increased weight or • 27.0 kg/sqm and of South Asian, Chinese, other Asian, Middle Eastern, Black African or African Caribbean ethnicity\* 6. At least one self-reported unsuccessful dietary effort to lose body weight 7. Able to provide written informed consent

Exclusion criteria

Exclusion criteria: 1. Previous bariatric surgery within the last 3 months or intention to undergo bariatric surgery during the trial 2. Previous surgery for IIH including optic nerve sheath fenestration, CSF shunting procedures, sub-temporal decompression and venous stenting 3. Using glucose-lowering medication 4. Currently taking or has received a GLP-1R agonist for any indication in the last 4 weeks 5. Previous or current pancreatitis 6. Contraindication to Tirzepatide (for example, previous or current medullary cancer, history of multiple endocrine neoplasia, active gall stones) 7. Current eating disorder requiring hospital intervention or treatment 8. Is unable to self-administer (or administer with carer support) the trial medication 9. Females of child-bearing potential only: • Pregnant (spot urine test will be performed before randomisation to rule out pregnancy) • Not willing to take highly effective contraceptive measures during the study intervention period AND for 5 weeks following the last trial medication dose • Not willing to stop breastfeeding once randomised into the trial

Countries

England, Northern Ireland, Scotland, United Kingdom, Wales

Contacts

Public ContactLauren Sturdy
l.sturdy@bham.ac.uk+44 121 4158840

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 7, 2026