v3.25.4
Document and Entity Information
 12 Months Ended
Dec. 31, 2025
shares
Entity Addresses [Line Items]  
Document Type 20-F
Amendment Flag false
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2025
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-40530
Entity Registrant Name GH Research PLC
Entity Central Index Key 0001855129
Entity Incorporation, State or Country Code L2
Entity Address, Address Line One Joshua Dawson House
Entity Address, Address Line Two Dawson Street
Entity Address, City or Town Dublin 2
Entity Address, Postal Zip Code D02 RY95
Entity Address, Country IE
Title of 12(b) Security Ordinary shares, nominal value $0.025 per share
Trading Symbol GHRS
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 62,029,395
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Accelerated Filer
Entity Emerging Growth Company true
Entity Ex Transition Period false
ICFR Auditor Attestation Flag false
Document Accounting Standard International Financial Reporting Standards
Document Financial Statement Error Correction [Flag] false
Entity Shell Company false
Auditor Firm ID 1366
Auditor Name PricewaterhouseCoopers
Auditor Location Dublin, Ireland
Business Contact [Member]  
Entity Addresses [Line Items]  
Contact Personnel Name Velichka Valcheva, MD, MSc
Entity Address, Address Line One Joshua Dawson House
Entity Address, Address Line Two Dawson Street
Entity Address, City or Town Dublin 2
Entity Address, Postal Zip Code D02 RY95
Entity Address, Country IE
Country Region 353
City Area Code 1
Local Phone Number 437 8334