Familial Aggregation of High Tumor Necrosis Factor Alpha Levels in Systemic Lupus Erythematosus

Table 2

TNF-𝛼 designation	No. of Instances	𝑃 value for familial aggregation	1st degree relative recurrence risk
High patient/high relative	63	2.9×10^−5	4.48
High patient/low relative	86
Low patient/high relative	46
Low patient/low relative	166