PTGDR and neuroblastoma: Importantly, while PRKCQ‐AS1 or MSI2 overexpression augments MYCN nonamplified neuroblastoma cell proliferation, MSI2 knockdown reverses PRKCQ‐AS1‐induced neuroblastoma cell proliferation, and PRKCQ‐AS1 knockdown blocks MSI2‐mediated neuroblastoma cell proliferation.