Allergen specific immunotherapy induced multi-organ failure

Area of Science:

• Immunology
• Allergy and Clinical Immunology
• Pharmacovigilance

Background:

• Allergen specific immunotherapy (ASI) is an established treatment for allergic conditions like asthma and rhinitis.
• Subcutaneous allergen immunotherapy (SCIT) effectively reduces symptoms but can cause side effects, typically mild.
• Fatal adverse events associated with ASI are infrequent.

Observation:

• A patient undergoing a desensitization protocol for allergic asthma experienced acute multi-organ failure (MOF).
• The severe reaction occurred shortly after the administration of allergen immunotherapy (Alustal®).
• This specific fatal outcome has not been previously reported as an adverse event of ASI.

Findings:

• The case presents a unique and severe adverse reaction to allergen immunotherapy.
• Establishing a causal link between the allergen extract administration and the multi-organ failure is crucial.
• This event underscores the importance of monitoring for rare but severe side effects during ASI.

Implications:

• This case highlights a potential, previously unrecognized severe risk associated with allergen immunotherapy.
• Further investigation is warranted to understand the mechanisms behind this rare fatal reaction.
• Clinicians should be aware of this potential adverse event when administering ASI.