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DIRA — Deficiency of Interleukin-1 Receptor Antagonist

Autoinflammatory neonatal-onset disease driven by unopposed interleukin-1 signaling.

Written by: Saygı Hospital Health Guide Editorial Board
Published:

This content is for general information; please consult your physician for diagnosis and treatment.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Dermatoloji department. Book Appointment →

What is DIRA — Deficiency of Interleukin-1 Receptor Antagonist?

DIRA (Deficiency of Interleukin-1 Receptor Antagonist) is a rare autosomal-recessive autoinflammatory disease caused by loss-of-function mutations in IL1RN, leading to unopposed IL-1α and IL-1β signaling.

Onset is typically within days to weeks of birth with sterile pustular skin eruptions, severe multifocal osteomyelitis with periostitis, lytic bone lesions, marked elevation of acute-phase reactants and failure to thrive.

Diagnosis combines characteristic neonatal-onset sterile pustulosis and bony lesions with genetic confirmation; treatment with the IL-1 receptor antagonist anakinra (and alternatives canakinumab or rilonacept) usually leads to dramatic clinical and biochemical remission.

Symptoms

Neonatal pustular skin eruption
Pain and swelling over long bones and ribs
Multifocal sterile osteomyelitis
Periostitis on radiographs
Persistent fever and irritability
Failure to thrive in infancy
Markedly elevated CRP and ESR

Risk Factors

Biallelic loss-of-function IL1RN mutations
Consanguineous parents
Founder mutations in specific populations (Newfoundland, Lebanese, Dutch, Brazilian)
Family history of unexplained neonatal pustulosis or osteomyelitis
Sibling diagnosed with DIRA
Infant mortality from untreated systemic inflammation
Delayed access to genetic and IL-1-blocking therapy

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Sterile pustular skin lesions in a newborn
  • Unexplained neonatal multifocal bone pain
  • Persistent infantile fever with elevated inflammatory markers
  • Familial history suggestive of autoinflammation
  • Suspicion of osteomyelitis without infectious source
  • Need for genetic confirmation
  • Worsening despite empirical antibiotics

Treatment Methods

01
Pediatric rheumatology and immunology referral
02
Genetic testing for IL1RN mutations
03
Anakinra subcutaneous daily as first-line
04
Canakinumab or rilonacept as alternatives
05
Supportive analgesia and orthopedic monitoring
06
Immunization adjustments per immunosuppression
07
Long-term follow-up of growth, organs and bone health

Which Department to Visit?

You can visit our Dermatoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Let us help you

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.