Further, ACE2 expression in bulk-RNAseq of GTEx lung samples (n = 578) is strongly correlated to markers of type II pneumocytes, with all seven surfactant protein-encoding genes among the top 4% of transcriptional correlations to ACE2 (out of the ~19,000 genes expressed at >1 Transcripts Per Million (TPM) in GTEx lung samples; hypergeometric p-value=1.1×10−10) (Figure 3—figure supplement 1).