Clinical practice guidelines for IgG4-related sclerosing cholangitis

Area of Science:

• Gastroenterology and Hepatology
• Immunology

Background:

• IgG4-related sclerosing cholangitis (IgG4-SC) is a biliary manifestation of IgG4-related disease, often linked with autoimmune pancreatitis.
• Current diagnostic criteria (2012) present challenges in differentiating IgG4-SC from primary sclerosing cholangitis and cholangiocarcinoma.
• Existing literature lacks practical guidelines for managing IgG4-SC, with low evidence levels (below C) from systematic reviews.

Purpose of the Study:

• To develop consensus-based clinical practice guidelines for IgG4-related sclerosing cholangitis (IgG4-SC).
• To address the need for accurate diagnostic and treatment strategies for IgG4-SC.
• To provide practical recommendations where existing evidence is limited.

Main Methods:

• A modified Delphi approach was employed to establish consensus.
• Three committees were formed: guideline creation, expert panelist rating, and evaluation.
• Eighteen clinical questions focusing on diagnosis (14) and treatment (4) were addressed, with recommendation levels determined by expert consensus.

Main Results:

• Consensus guidelines for IgG4-related sclerosing cholangitis (IgG4-SC) were established.
• Recommendations cover diagnostic methods and treatment strategies.
• The guidelines aim to improve the management of IgG4-SC.

Conclusions:

• The developed guidelines provide a framework for the accurate diagnosis and appropriate treatment of IgG4-SC.
• These guidelines address the current lack of practical recommendations for IgG4-SC management.
• The modified Delphi approach facilitated consensus on key clinical questions regarding IgG4-SC.