The phrase "alone underscores" is correct and usable in written English.
It can be used to emphasize that something by itself highlights or emphasizes a particular point or idea.
Example: "The data alone underscores the need for immediate action to address climate change."
Alternatives: "by itself highlights" or "solely emphasizes".
Abysmally low voter turnout alone underscored how Americans thought it hardly mattered who was elected.
But his presence here alone underscored that he has the capacity to leave his stamp on the race, whether he runs or not.
Furthermore, the combined treatment of cancer cells by using Au@PDDA-MTX/LDH for synergistic hyperthermia ablation and chemotherapy was demonstrated to exhibit higher therapeutic efficacy than either single treatment alone, underscoring the great potential of the platform for cancer therapy.
A significant 40% survival rate could still be achieved by rolipram alone, underscoring the superiority of the PDE4 inhibitor over sertraline.
More than 20 different members of the kinesin superfamily are identified with mitosis alone, underscoring the motor's fundamental importance in the cellular life cycle (Rath and Kozielski, 2012).
Recent publications on the feasibility of elimination of onchocerciasis in Africa[ 18, 31] with ivermectin alone, underscored the effectiveness of the CDTI strategy and the power of this unique partnership.
Playing this song alone in the spotlight only underscored its poor-little-rich-girl qualities.
A12 NATIONAL A22-37 Flurry of Political Ads Saturates Iowa Airwaves The four major Democratic candidates competing in Iowa have run at least 4,500 television spots in Des Moines alone, which underscores the increasing belief that Iowa may be more critical than in the past in determining who ends up with the Democratic nomination.
