A recent study with human blood, bronchoalveolar lavage fluid (BALF), and the lungs successfully identified ILC2s in human lung tissue and found a previously unrecognized human ILC2s population with new surface markers, such as CD30 and tumor necrosis factor receptor 2 (TNFR2), which may drive asthma [55]. Here, TNFRSF1B is linked to asthma.