PLD2 and systemic lupus erythematosus: Only 27 loops (0.9%) on 15 lupus haplotypes were significantly different between the two groups; four loops had significantly fewer PETs in the pediatric self-called peaks compared to the adult primary B cell peaks (PARP11: chr12:3,857,402–3990865, PLD2: chr17:4,705,955–4930243, ARID3 A: chr19:834,045–1010097, and TYK2: chr19:10,243,816–10447681), and the remaining 23 loops had significantly more PETs in the pediatric self-called peaks.