Author 1, AA: acquisition of data, drafting the case report and figures.

Author 2, EZ: revising the case report critically.

Author 3, RL: revising the case report and providing up-to-date pregnancy and breastfeeding data.

Author 4, RL: revision and final approval.

All the authors were involved in the patient’s clinical care.

Data availability statement: The data in this case report are not publicly available due to containing information that could compromise the patient’s privacy but are available from the corresponding author AA upon reasonable request.

Funding statement: This case report did not receive financial support.

Conflict of interest disclosure: Rupert W Leong reports advisory board membership of AbbVie, Aspen, BMS, Celgene, Celltrion, Chiesi, Ferring, Glutagen, Hospira, Janssen, Lilly, MSW, Novartis, Pfizer, Prometheus Biosciences, Takeda and research grant support from McCusker Charitable Foundation, Joanna Tiddy grant University of Sydney, Celltrion, Shire, Janssen, Takeda, Gastroenterological Society of Australia, MRFF, NHMRC, Gutsy Group, Pfizer. All the other authors have no conflict of interest to declare.

Ethics approval statement: This case report was approved by the Macquarie Health Clinical Innovation and Audit Committee. Reference number: MQCIAC2023009.

Patient consent statement: The patient has provided written consent to publish this case report and all accompanying details of her health issue.

Acknowledgements: The authors have no acknowledgements to make.