THE BILL ITSELF
CS/HB 411
Developmental Disabilities
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A bill to be entitled
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An act relating to developmental disabilities;
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amending s. 393.063, F.S.; revising the definition of
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the term "developmental disability"; defining the term
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"Tatton-Brown-Rahman syndrome"; providing an effective
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date.
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Be It Enacted by the Legislature of the State of Florida:
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Section 1. Subsections (46) and (47) of section 393.063,
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Florida Statutes, are renumbered as subsections (47) and (48),
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respectively, subsection (11) is amended, and a new subsection
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(46) is added to that section, to read:
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393.063 Definitions.—For the purposes of this chapter, the
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term:
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(11) "Developmental disability" means a disorder or
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syndrome that is attributable to intellectual disability,
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cerebral palsy, autism, spina bifida, Down syndrome, Phelan-
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McDermid syndrome, or Prader-Willi syndrome, or Tatton-Brown-
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Rahman syndrome; that manifests before the age of 18; and that
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constitutes a substantial handicap that can reasonably be
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expected to continue indefinitely.
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(46) "Tatton-Brown-Rahman syndrome" means a disorder
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caused by a mutation in the DNMT3A gene typified by mild to
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severe intellectual disability, macrocephaly, stature and weight
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that is greater than or equal to two or more standard deviations
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above the mean for the person's age and sex, and any of the
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following features presenting in infancy, childhood, or
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adolescence:
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(a) Mild facial dysmorphism.
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(b) Joint hypermobility.
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(c) Hypotonia.
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(d) Kyphoscoliosis.
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(e) Seizures.
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(f) Cryptorchidism.
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(g) Deficits in behavior.
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(h) Hematologic malignancies.
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Section 2. This act shall take effect July 1, 2026.