connective N2 common writtenpolite

〜に関わる — to affect ~

〜に関わる・にかかわる

Meaning

to affect ~ / to have a (serious) bearing on ~ / to be a matter of ~ — marks something whose outcome critically touches an important matter

これは命いのちに関かかわる問題もんだいだ。

This is a matter of life and death.

Attaches to	Form	Example
Noun (often something weighty: 命いのち, 名誉めいよ, 信用しんよう, 将来しょうらい)	Nに関かかわる + Noun / Nに関かかわる (predicate)	信用しんように関かかわる / 将来しょうらいに関かかわる決断けつだん

When: Formal/written; typically about high-stakes matters where the consequence is grave.

情報じょうほう漏洩ろうえいは会社かいしゃの存続そんぞくに関かかわる。

A data leak could affect the very survival of the company.

それは私わたしのプライドに関かかわることだ。

That's something that touches my pride.

Same verb 関かかわる as the everyday 'to get involved in / be connected with' (事件じけんに関かかわる); in the grammar pattern it leans to the grave 'be a matter of ~' sense.

Jengo shows 〜に関わる the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.

Sources Compiled from published Japanese grammar references.