HLA Markers for Poor Prognosis in Systemic Sclerosis Brazilian Patients

Table 5

Risk and protective alleles for pulmonary arterial hypertension.

PAH-related alleles	PR	(95% CI)	𝑃^∗
HLA-B*35	2.58	(1.14–5.85)	0.035
HLA-C*04	2.71	(1.19–6.18)	0.015
HLA-C*03	0.13	(0.01–2.14)	0.044

95% CI: 95% confidence intervals; PR: prevalence ratio; *univariate 𝑃 values calculated with Chi-square and Fisher’s exact tests where appropriate.
The PR and 𝑃 values ​ ​were obtained by comparing patients with and without PF and PAH.