In SRA/ENA, a sample may have multiple runs, especially scRNA-seq samples. e.g. [GSE127942](https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE127942) ([PRJNA525843](https://www.ncbi.nlm.nih.gov/Traces/study/?acc=PRJNA525843&o=acc_s%3Aa)).