Footnotes

• Contributors HT contributed to the conception of the idea underlying the case report, and the analysis and interpretation of data based on previous clinical trials. JBEL contributed to the acquisition of data and drafting of the work. CLLS was instrumental to facilitating the laboratory assays needed. HJN contributed to the conception of the idea underlying the case report, the analysis and interpretation of data, drafting and revising it critically for important intellectual content. He is the guarantor of this case report's overall content. All authors have reviewed the final version of the case report, and agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

• Competing interests None.

• Patient consent Obtained.

• Provenance and peer review Not commissioned; externally peer reviewed.