"has been less amenable" is correct and can be used in written English.
You can use it when describing a situation or a person's attitude that has become less compliant or less cooperative. For example: "Since the restructuring of the company, the employees have been less amenable to the new management team."
Individualized treatment plans are important as certain conditions are more amenable to surgery, such as structural cricopharyngeal disorders.78 In general, unfortunately, results of surgery for the correction of dysphagia have been less than promising.
Although primary T cells have typically been less amenable to more traditional forward genetic approaches, we show here how chemical biology can rapidly advance our understanding of Th biology.
(1) The applied formal analytical technique has strong requirements that may be less amenable to assessing "broader" types of interventions.
Patients with metastatic cancer may have lower levels of functioning and be less amenable to the intervention.
For this treatment-resistant population, among whom approximately one-third had not received MTX and thus was less amenable to responding versus combination therapy [ 15], this was not necessarily expected.
The more comprehensive experimental datasets have yielded a number of interactions that are less amenable to ENTS detection due to either an absence of PFAM domains in one or both of the proteins in the pair or because of the presence of domain pairs infrequently associated with physical interaction.
It is not entirely clear why the other Member States proved to be less amenable than Cameron might have hoped.
Women have less insulin resistance than men and may thus be less amenable to metabolic syndrome related cognitive dysfunction.
Although the Martinique-born David Regis had had his citizenship fast-tracked in time to feature at the 1998 World Cup, the post-9/11 climate was less amenable to bending the rules.
Increased myocardial fibrosis has been associated with LVDD and such structural changes are considered to be less amenable to treatment [ 31].
