  In the current proceedings, we summarise the results presented during the mm
Universe@NIKA2 conference, taken from our main results in
\cite{Haridasu:2021hzq}. We test the Degenerate higher-order
scalar-tensor(DHOST) theory as a generalised platform for scalar-tensor theory
at galaxy cluster scales to predict in such static systems small scale
modification to the gravitational potential. {DHOST theory is not only a good
alternative to $\Lambda$CDM for the background evolution but also predicts
small-scale modification to the gravitational potential in static systems such
as galaxy clusters.} With a sample of 12 clusters with accurate X-ray Intra
Cluster Medium (ICM) data (X-COP project) and Sunyaev-Zel'dovich (SZ) ICM
pressure (Planck satellite), we place preliminary constraints on the DHOST
parameters defining the deviation from GR. Moreover, we also collect a few
supplementary analyses we have performed during the course: i) Gaussian process
reconstruction without parametric assumptions, ii) $\Psz$-only data analysis
not aided by the X-ray data. Finally, we present possible extensions to the
current work which may benefit from future high sensitivity and spatial
resolution observations such as the ongoing NIKA2 camera.
