Introduction -In 2023 we proposed to perform the fitting of Raman spectra with q-Gaussian line shapes, which are a generalization of the Lorentzian profile. The q-Gaussian is a function based on the Tsallis q-form of the exponential function . This generalized form of exponential is characterized by a qparameter. When q is equal to 2, we have the Lorentzian function. If q is close to 1, we have a Gaussian function. For values of q between 1 and 2, we have a bell-shaped symmetric function with power-law wings ranging from Gaussian to Lorentzian tails. As shown on many occasions, the q-Gaussians are suitable for fitting Raman spectra (from examples proposed in SSRN to the SERS cases). However, we can define also an asymmetric function, turning the Breit-Wigner-Fano into a q-BWF function . Let us write the BWF as follow: