Sjögren's disease & overlap diseases

Abatacept use for 24 weeks has a limited effect on salivary gland inflammation in Sjögren's disease patients

Clin Exp RheumatolPublished Secondary analysis of the ASAP-II, ASAP-III and IM101603 randomised trials

Authors' conclusion

Abatacept has limited effects on salivary gland histology in SjD patients after 24 weeks of treatment.

Study context

Population
Sjögren's disease (SjD) patients from the Dutch ASAP-II and ASAP-III trials and the international abatacept trial (IM101,603) with a labial or parotid salivary gland biopsy at baseline and after 24 weekslabial 13, parotid 28
Participants
41 patients
Comparison
Abatacept vs placebo for 24 weeks: salivary gland histopathology
  • Abataceptn = 25
  • Placebon = 16reference
Primary endpoint
SjD-related histopathological features of salivary gland biopsies before and after treatment
Follow-up
24 weeks
Methodological detailssalivary gland biopsies at baseline and after 24 weeks, labial (n=13) or parotid (n=28) biopsies
  • Salivary gland biopsies at baseline and after 24 weeks
  • Labial (n=13) or parotid (n=28) biopsies

Primary result

As reported in the abstract

Parotid glands: number of IgA plasma cells increased in the abatacept group after 24 weeks
p=0.049
Parotid glands: CD20+ B-cells/mm² increased vs baseline in the placebo group
p=0.021

Further findings

Baseline histopathology as predictor of response to abatacept (CRESS or ClinESSDAI responders vs non-responders)

No evident differences in baseline histopathological parameters between responders and non-responders

Original publication

Abatacept use for 24 weeks has a limited effect on salivary gland inflammation in Sjögren's disease patients. Clin Exp Rheumatol. Published 18 December 2023. doi:10.55563/clinexprheumatol/6n0y0v

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