Soluble Interleukin-6 Receptor, Serum Level of, Quantitative Trait Locus, is also known as soluble il6r, serum level of, quantitative trait locus. An important gene associated with Soluble Interleukin-6 Receptor, Serum Level of, Quantitative Trait Locus is IL6R (Interleukin 6 Receptor).