"response to the concern" is a correct and usable phrase in written English.
For example, "After thoughtful consideration, I believe the best response to the concern is to institute a new policy."
This volume is a response to the concern that countries such as Mongolia are marginalized when academia and international diplomacy reconfigure area studies borders in the postsocialist era.
Update: I realized that I also wanted to say something in response to the concern trolling, the "if you were more moderate you'd have more influence" stuff.
In response to the concern generated over the deaths of children last winter, however, the United Nations and aid groups have banded together to prevent a recurrence if bad weather returns next year.
In response to the concern shown by Obama about the plans for the possible use of Russia's armed forces on the territory of Ukraine, Putin drew attention to the provocative, criminal actions by ultra-nationalists, in essence encouraged by the current authorities in Kiev," the statement said.
The move may be a response to the concern expressed by many that the threat from militants has migrated elsewhere while the United States has been concentrating on Iraq and Afghanistan.
Terra Firma was created in response to the concern that humanity's individuality might be diluted or lost after too much integration into alien cultures.
On Thursday, in response to the concerns, administration officials said the city might postpone the changes.
His response to the concerns of alleged corruption is that he is reforming the organisation.
The response to the concerns about this advert say much about what men deem appropriate.
We are preparing a comprehensive response to the concerns that the commission raised last year.
He was widely mocked for this response to the concerns raised a year earlier by John Denham in his memo.
