F2RL1 and asthma: Using RT-qPCR, we determined the relative expression of genes previously linked to fungal proteinase-dependent activation of proteinase activated receptor 2 (PAR-2) and the IL-13 receptor that include alarmins, antimicrobial peptides, and asthma-related genes that are expressed under the control of multiple transcription factors linked to these immune receptors (Figure 6B).