Review Article

Plasticity and mTOR: Towards Restoration of Impaired Synaptic Plasticity in mTOR-Related Neurogenetic Disorders

Table 1

Diagnostic criteria.
(a) TSC. Definite TSC: two major or one major and two minor features; probable; TSC: one major and one minor feature; possible TSC: one major or two or more minor features

Major featuresMinor features

Cortical tubersDental enamel pits
Subependymal nodulesHamartomatous rectal polyps
Subependymal giant cell astrocytomaBone cysts
Hypomelanotic macules (3 or more)Cerebral white matter radial migration lines
Shagreen patchGingival fibromas
Facial angiofibromas or forehead plaqueNonrenal hamartoma
Multiple renal nodular hamartomasRetinal achromatic patches
Nontraumatic ungual or periungual fibromas“Confetti” skin lesions
Cardiac rhabdomyomaMultiple renal cysts
Pulmonary lymphangiomyomatosis and/or renal angiomyolipomas

(b) NF1. Presence of two or more clinical features

Family history of NF1Neurofibromas or plexiform neurofibromas

Six or more cafe-au-lait spotsAxillary or groin freckling
Lisch nodulesSkeletal abnormalities—tibial dysplasia or shin bone thinning
Optic glioma

(c) FXS

Full mutation >200 CGG repeats
Premutation 50–230 CGG repeats

(d) PTHS (Only Cowden syndrome has diagnostic criteria). Cowden syndrome. Operational diagnosis: mucocutaneous lesion alone if: 6 or more facial papules, 3 or more trichilemmoma; cutaneous facial papules and oral mucosal papillomatosis; oral mucosal papillomatosis and acral keratosis, or 6 or more palmoplantar keratosis; or two or major criteria, including macrocephaly or adult Lhermitte-Duclos disease; or one major or three minor criteria; or four minor criteria

Pathognomic criteriaMajor criteriaMinor criteria

Adult Lhermitte-DuclosBreast cancerIntellectual disability
Mucocutaneous lesionsThyroid cancerOther thyroid lesions
MacrocephalyGI hamartomas
Endometrial cancerFibrocystic breast disease
Lipomas; fibromas
Genitourinary tumors or malformations

EIF4E (No diagnostic criteria).