The phrase "directly pertain" is correct and usable in written English.
You can use it to indicate a connection or relevance between two or more things. For example, "The new regulations directly pertain to environmental safety."
Your advisee may share personal information that does not directly pertain to the case.
Both defendants had wanted separate trials, hoping to exclude evidence that did not directly pertain to them and thus weaken the force of the case.
The report says "several" of the letters did not directly pertain to Mayfield, indicating that the FBI obtained records about other individuals as well -- a move that likely would not have been allowed before the Patriot Act reforms, the report said.
As the actions taken by the second lien creditors did not directly pertain to the senior creditors' interest in shared collateral or any right "very clearly precluded or constrained" by the ICA, the Court refused to find the existence of contractual breach.
We removed phyla/divisions that did not directly pertain to the learning goals.
But if you focus on the really important issues--the real accomplishments that directly pertain to your thesis--you'll be able to come up with a short list.
How he could be so unaware of perhaps the seminal event in McCain's life — and the one which directly pertains to a war-hero debate in which Trump participated in an extremely high-profile way just a couple years ago?
This directly pertains to multi-hypothesis tracking (MHT), where in the presence of clutter and/or multiple targets (i) low complexity algorithms are desirable and (ii) using a small set of measurements avoids the combinatorial explosion.
He adds that, if the information requested directly pertained to an investigation like a receipt for a hotel booking with a CSIS agent's name it's reasonable for the agency to exempt the information.
Each course or competency set was then abstracted and reviewed by the study team to determine whether it directly pertained to disasters, whether it addressed healthcare workers and whether there was an established partnership/ endorsement by a national professional organization or governmental agency.
The study may have overestimated the inclusion of human rights in medical school curricula as only 6 of the 16 issues pertained directly to human rights (10 pertained to bioethics) and the extent to which human rights and bioethics topics were addressed in the required bioethics courses was not assessed.
