The spin-flip processes in deep inelastic scatterings were believed to be suppressed in the high
energy until recently. A positive intercept for the spin-flip generalized transverse momentum-
dependent parton distribution (GTMDs) Re(𝐹1,2) was derived. This is done by analytically solving
the integro-differential evolution equation for Re(𝐹1,2). The surviving solution corresponds to
conformal spin 𝑛 = 2 and carries an explicit cos 3𝜙𝑘Δ + cos 𝜙𝑘Δ azimuthal dependence. As the
imaginary part of 𝐹1,2, is related to the spin-dependent odderon or gluon Siver function and scales
as Im(𝐹1,2) ∼ 𝑥0, the positive intercept for Re(𝐹1,2), implies that it is expected to dominate over
the gluon Siver function in the small-𝑥 limit and may directly impact the modeling of unpolarised
GTMDs and associated spin-flip processes.