David Ledbetter is chief clinical officer of Dascena, a personalized medicine company.
David Ledbetter
Chief clinical officer
Dascena
From this contributor
There are no autism-specific genes, just brain genes
There is not yet a single example of a gene that, when mutated, increases the likelihood of autism but not of other neurodevelopmental conditions, including intellectual disability.
There are no autism-specific genes, just brain genes
By
David Ledbetter, Scott Myers
23 March 2021 | 5 min read
Developmental disorders should be viewed as continuum
Intellectual disability, autism, epilepsy and schizophrenia should be considered part of a spectrum of developmental brain dysfunction, says David Ledbetter.
Developmental disorders should be viewed as continuum
By
David Ledbetter
6 May 2013 | 3 min read
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PTEN problems underscore autism connection to excess brain fluid
Damaging variants in the autism-linked gene cause congenital hydrocephalus—a buildup of cerebrospinal fluid in the brain—by turbocharging a downstream signaling pathway that promotes the growth of cells, according to a new study.
PTEN problems underscore autism connection to excess brain fluid
Damaging variants in the autism-linked gene cause congenital hydrocephalus—a buildup of cerebrospinal fluid in the brain—by turbocharging a downstream signaling pathway that promotes the growth of cells, according to a new study.
By
Holly Barker
3 April 2025 | 4 min read
U.S. health agency purge includes 10 lab heads at National Institute of Neurological Disorders and Stroke
The reasons for selecting these researchers—who have led work on neuronal migration, dopamine receptors in neuronal signaling and the structure of ion channels, among other areas—remain unclear.
U.S. health agency purge includes 10 lab heads at National Institute of Neurological Disorders and Stroke
The reasons for selecting these researchers—who have led work on neuronal migration, dopamine receptors in neuronal signaling and the structure of ion channels, among other areas—remain unclear.
By
Angie Voyles Askham, Sydney Wyatt
2 April 2025 | 5 min read
Five things to know if your federal grant is terminated
If you want to appeal the decision, know the rules that govern terminations, as well as the specific rationale given in your notice, science policy experts say.
Five things to know if your federal grant is terminated
If you want to appeal the decision, know the rules that govern terminations, as well as the specific rationale given in your notice, science policy experts say.
By
Calli McMurray
2 April 2025 | 7 min read