NME7 gene knockdown causes primary ciliary dyskinesia (Šedová et al., 2021), MRPS31 gene deletion causes mitochondrial deregulation and the aggression of hepatocellular carcinoma (Min et al., 2021), and TPM1 gene knockdown causes early embryonic death (Ma et al., 2021). Here, MRPS31 is linked to hepatocellular carcinoma.