Disruption of grin2B, an ASD-associated gene, produces social deficits in zebrafish.

This is a zebrafish laboratory model, not a human clinical study, so it cannot show what helps patients with autism or communication disorders. The fish were not given any therapy, and the outcomes are fish social preference, not human speech, language, social communication, or occupational performance. The authors note that the subpallium is not fully mature at the larval imaging stage, so links to later brain structures are inferred rather than directly measured. Only some NMDAR subunits were tested; the authors state that grin2C and grin2D double mutants were not tested, so other subunits cannot be definitively ruled out. Several detailed comparisons are reported in supplementary tables not provided here, so exact sample sizes and full comparisons cannot be checked from the text alone. Compensatory upregulation of other NMDAR subunit genes may explain why many behaviours were normal, so the social deficit is not a simple whole-brain effect.

The supplied text does not include a conflict-of-interest declaration. The publication types list NIH extramural and intramural research support.

Do not read this as evidence that changing GluN2B function will treat social deficits in people with autism. The study tested zebrafish with gene mutations, not human patients, and the measured outcome was fish social preference, not a therapy effect.