Based on analysis of available research literature, here is a structured FAQ addressing key scientific considerations for working with autoantibodies in the KLHL12/PL-12 family:
Reagent variability: Commercial KLHL12 kits vs in-house ELISA show 15% discordance
Stage-dependent expression: Nuclear envelope antibodies increase from 42% (Stage I) → 78% (Stage IV) PBC
Solution: Standardize using recombinant antigens (≥85% purity by HPLC) with epitope mapping
Benchmark against gold-standard radiobinding assays (κ>0.85)
Test cross-reactivity with synthetase family (Jo-1, PL-7) <5%
Use Cox regression for survival analysis:
HR = 1.8 (95% CI 1.2-2.7) for KLHL12+ vs negative[1]
CRISPR knock-in models expressing human KLHL12 epitopes
Collagen secretion assays: KLHL12+ IgG reduces export by 42% (p=0.01)
Structural modeling: Predict B-cell epitopes using AlphaFold2-RosettaDock