"attempts to reproduce similar findings in humans have failed"

CPH treatment may be useful in dementias of medium level in quite old groups of patients, since 48% of the verum group displayed improvements in the memory functions against 28% of the placebo group.

https://pubmed.ncbi.nlm.nih.gov/2506844/

"The drug thus might simply be a treatment for the type of genetic disorder that the mouse model"

Got any experimental or observational evidence for this hypothesis?