"it could depend" is a correct and usable phrase in written English.
You can use it to suggest that something may vary depending on certain circumstances. For example: "Which route should we take to get to the beach? It could depend on the traffic conditions."
The requirement of cholesterol-rich domains for TACE/ADAM17 function could be cell type dependent and/or it could depend on the protein substrate.
Having wooed New Yorkers over the last decade, the mountain resort knew it could depend on its discerning New York crowd.
The reason for such a remarkable age-dependent timeshift of disease onset is unknown, but it could depend on a modification of the genetic background of the mice.
"It could depend on whether someone's appointed to deal with climate issues," Biniaz said.
It could depend on the mix of private versus public insurance, how much free care the hospital provides, competition, its location and more.
It could depend on nonfood biofuels, like wood chips and algae, which experts predict could someday be produced for $1 a gallon and substitute for up to half of the gasoline consumed by American cars.
It could, depending on whom you ask, lead to sanctions of North Carolina's athletic program or — eventually — just blow over.
"It could, depending on how many schools leave, affect the value of our contract," Mike Aresco, senior vice president of CBS Sports, said.
It probably won't replace your desktop or big-boy laptop, but it could, depending on what you're doing.
A $1,000 speaker does not necessarily sound 10x better than a $100 one (though it could, depending on the products involved).
It is in line with a previous report on chronic daily headache.[2] On the contrary, the drug consumption improved, but it is unclear if it could depends by the medical advice to avoid ineffective drug treatments.
