What does this research mean for the field?

Allogeneic hematopoietic stem cell transplantation is a viable curative option for Hyper-IgE syndrome, although it can be associated with severe but manageable post-transplant complications. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To describe the clinical course, post-transplant complications, and successful management of a pediatric patient with STAT3-mutated Hyper-IgE syndrome undergoing allogeneic hematopoietic stem cell transplantation.

August 22, 2026Journal of Human ImmunityOpen Access

Rare Complications After Treatment of Hyper IgE Syndrome with Allogeneic Hematopoietic Stem Cell Transplantation

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To describe the clinical course, post-transplant complications, and successful management of a pediatric patient with STAT3-mutated Hyper-IgE syndrome undergoing allogeneic hematopoietic stem cell transplantation.
Evaluated an 8-year-old girl with STAT3-deficient Hyper-IgE syndrome who underwent allogeneic bone marrow transplantation from a matched related donor under a myeloablative reduced-toxicity conditioning regimen.
Administered cyclosporine for graft-versus-host disease prophylaxis and provided eight sequential donor lymphocyte infusions starting on day +30 to promote immune reconstitution and stabilize donor chimerism.
Post-transplant complications included engraftment syndrome, Pseudomonas aeruginosa sepsis, Legionella pneumophila necrotizing pneumonia with residual abscess, adenoviral colitis, BK virus hemorrhagic cystitis, and CMV-related encephalopathy with polyneuropathy.
By 10 months post-transplantation, the patient achieved complete donor chimerism, satisfactory immune reconstitution, absence of bacterial infections, and marked improvement of polyneuropathy.

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Implication

Case report reveals successful resolution of complex infectious and neurological complications after allogeneic stem cell transplantation in Hyper-IgE syndrome, highlighting curative feasibility.

Cite This Study

Simić et al. (2026) studied this question.

synapsesocial.com/papers/6a89600eca7ade938187f116 https://doi.org/10.70962/sgpi2026abstract.27

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Implication

Case report reveals successful resolution of complex infectious and neurological complications after allogeneic stem cell transplantation in Hyper-IgE syndrome, highlighting curative feasibility.

Rare Complications After Treatment of Hyper IgE Syndrome with Allogeneic Hematopoietic Stem Cell Transplantation

Key Points

Discussion

Implication

Cite This Study

Rare Complications After Treatment of Hyper IgE Syndrome with Allogeneic Hematopoietic Stem Cell Transplantation

Key Points

Discussion

Implication

Cite This Study

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