Coronary disease & ACSResearch article

Age-specific coronary outcomes in subacute Kawasaki disease

Am Heart JPublished

  • Multivariable logistic regression analyses
  • Restricted cubic splines
  • nine 6-month age groups

Authors' conclusion

Coronary outcomes differed substantially across age groups; patients aged 0 to 6 months had the most adverse coronary outcomes. Even without CALs at initial echocardiography, this age group had the highest risk of subsequent CAL development.

Study context

Population
Patients with Kawasaki disease (KD) in Japan (2011–2022)patients with KD in Japan (2011–2022)
Participants
129,950 patients
Comparison
Age-specific associations using the restricted cubic splines (RCS)-identified reference group

Main finding

As reported in the abstract

Subsequent CAL development among patients without CALs at initial echocardiography · subacute phase

0 to 6-month group

2.8%

Further findings

Outcomeadjusted odds ratio (95% CI)
CA dilatation regression · less likely with 0 to 6 months · multivariable analysis0.44 (0.30–0.63)
CAL progression · more likely with 0 to 6 months · multivariable analysis3.84 (3.03–4.86)
Outcome0 to 6-month group25 to 30-month groupEstimate
CA regression among patients with CA dilatation · subacute phase75.5%Not reported in the abstract
  • Coronary artery (CA) regression among patients with CA dilatation: lowest proportion among age groups; among patients with CA dilatation

CA dilatation regression and CAL progression by age (RCS)

25 to 30-month group most likely to show CA dilatation regression and least likely to experience CAL progression

Original publication

Age-specific coronary outcomes in subacute Kawasaki disease. Am Heart J. Published 30 August 2026. doi:10.1016/j.ahj.2026.107593

Summarised from the published abstract; every number is checked against it