Muscular hypotonia, and Narrow chest

• Intellectual disability
• Seizures
• Global developmental delay
• Generalized hypotonia
• Strabismus

SOURCES: OMIM MENDELIAN

Congenital muscular dystrophy due to LMNA mutation is a rare congenital muscular dystrophy characterized by prominent axial hypotonia, dropped head syndrome, predominantly proximal muscle weakness in upper limbs/distal in lower limbs (with absent, poor or lost motor development), joint contractures (initially distal, later proximal), spine rigidity, and early respiratory insufficiency, in the presence of moderately elevated serum creatine kinase. Cardiac arrhythmias and sudden death have been also reported.

CONGENITAL MUSCULAR DYSTROPHY DUE TO LMNA MUTATION Is also known as mdcl|lmna-related congenital muscular dystrophy|l-cmd

• Global developmental delay
• Generalized hypotonia
• Growth delay
• Failure to thrive
• Muscle weakness

SOURCES: ORPHANET OMIM MESH MENDELIAN

Short-rib thoracic dysplasia (SRTD) with or without polydactyly refers to a group of autosomal recessive skeletal ciliopathies that are characterized by a constricted thoracic cage, short ribs, shortened tubular bones, and a 'trident' appearance of the acetabular roof. SRTD encompasses Ellis-van Creveld syndrome (EVC) and the disorders previously designated as Jeune syndrome or asphyxiating thoracic dystrophy (ATD), short rib-polydactyly syndrome (SRPS), and Mainzer-Saldino syndrome (MZSDS). Polydactyly is variably present, and there is phenotypic overlap in the various forms of SRTDs, which differ by visceral malformation and metaphyseal appearance. Nonskeletal involvement can include cleft lip/palate as well as anomalies of major organs such as the brain, eye, heart, kidneys, liver, pancreas, intestines, and genitalia. Some forms of SRTD are lethal in the neonatal period due to respiratory insufficiency secondary to a severely restricted thoracic cage, whereas others are compatible with life (summary by Huber and Cormier-Daire, 2012 and Schmidts et al., 2013).There is phenotypic overlap with the cranioectodermal dysplasias (Sensenbrenner syndrome; see CED1, {218330}).For a discussion of genetic heterogeneity of short-rib thoracic dysplasia with or without polydactyly, see SRTD1 (OMIM ).

• Generalized hypotonia
• Low-set ears
• Brachydactyly
• Ventricular septal defect
• Respiratory insufficiency

SOURCES: OMIM MENDELIAN

Neonatal severe primary hyperparathyroidism (NSHPT) is characterized by severe hypercalcemia (> 3.5 mM) from birth and associated with major hyperparathyroidism.

NEONATAL SEVERE PRIMARY HYPERPARATHYROIDISM Is also known as nhpt|nsph|nshpt|hyperparathyroidism, neonatal severe primary

• Short stature
• Generalized hypotonia
• Neoplasm
• Failure to thrive
• Muscular hypotonia

SOURCES: ORPHANET MESH OMIM MENDELIAN

Congenital nephrotic syndrome-interstitial lung disease-epidermolysis bullosa syndrome is a life-threatening multiorgan disorder which develops in the first months of life, presenting with respiratory distress and proteinuria in the nephrotic range, and leading to severe interstitial lung disease and renal failure. Some patients additionally display cutaneous alterations, ranging from blistering and skin erosions to an epidermolysis bullosa-like phenotype, with toe nail dystrophy and sparse hair.

JUNCTIONAL EPIDERMOLYSIS BULLOSA WITH RESPIRATORY AND RENAL INVOLVEMENT Is also known as jeb-rr|jeb with respiratory and renal involvement|congenital interstitial lung disease-nephrotic syndrome-epidermolysis bullosa syndrome|congenital nephrotic syndrome-interstitial lung disease-epidermolysis bullosa syndrome|congenital ilneb syndrome|conge

• Microcephaly
• Hypertelorism
• Muscular hypotonia
• Fever
• Respiratory distress

SOURCES: OMIM ORPHANET MENDELIAN

• Intellectual disability
• Global developmental delay
• Short stature
• Generalized hypotonia
• Microcephaly

SOURCES: OMIM MENDELIAN

Typical nemaline myopathy is a moderate neonatal form of nemaline myopathy (NM; see this term) characterized by facial and skeletal muscle weakness and mild respiratory involvement.

• Scoliosis
• Micrognathia
• Ptosis
• Flexion contracture
• High palate

SOURCES: ORPHANET MENDELIAN

Nemaline myopathy-1 is a disorder characterized by muscle weakness, usually beginning in early childhood. The severity and pattern of muscle weakness varies, but most affected individuals show mildly delayed motor development, hypotonia, generalized muscle weakness, and weakness of the proximal limb muscles and neck muscles, resulting in difficulty running and easy fatigability. Most patients have respiratory insufficiency due to muscle weakness. Other common features include myopathic facies, high-arched palate, and scoliosis. Histologic findings on skeletal muscle biopsy are variable, even in patients with the same mutation. Muscle fibers can contain nemaline rod inclusions, or so-called subsarcolemmal 'cap' structures, as well as show overall fiber-type disproportion. It has been suggested that unknown modifying factors confer a tendency to one or another pattern of inclusions on skeletal muscle biopsy in those with TPM3 mutations (summary by Waddell et al., 2010 and Malfatti et al., 2013).For a discussion of genetic heterogeneity of nemaline myopathy, see {161800}.

• Generalized hypotonia
• Scoliosis
• Muscle weakness
• Muscular hypotonia
• Flexion contracture

SOURCES: MESH OMIM MENDELIAN

Autosomal recessive spondylometaphyseal dysplasia, Mégarbané type is a rare, primary bone dysplasia characterized by intrauterine growth retardation, pre- and postnatal disproportionate short stature with short, rhizomelic limbs, facial dysmorphism, a short neck and small thorax. Hypotonia, cardiomegaly and global developmetal delay have also been associated. Several radiographic findings have been reported, including ribs with cupped ends, platyspondyly, square iliac bones, horizontal and trident acetabula, hypoplastic ischia, and delayed epiphyseal ossification.

AUTOSOMAL RECESSIVE SPONDYLOMETAPHYSEAL DYSPLASIA, MÉGARBANÉ TYPE Is also known as chondrodysplasia, megarbane-dagher-melki type

• Global developmental delay
• Short stature
• Generalized hypotonia
• Growth delay
• Low-set ears

SOURCES: MESH OMIM ORPHANET MENDELIAN

Short-rib thoracic dysplasia (SRTD) with or without polydactyly refers to a group of autosomal recessive skeletal ciliopathies that are characterized by a constricted thoracic cage, short ribs, shortened tubular bones, and a 'trident' appearance of the acetabular roof. SRTD encompasses Ellis-van Creveld syndrome (EVC) and the disorders previously designated as Jeune syndrome or asphyxiating thoracic dystrophy (ATD), short rib-polydactyly syndrome (SRPS), and Mainzer-Saldino syndrome (MZSDS). Polydactyly is variably present, and there is phenotypic overlap in the various forms of SRTDs, which differ by visceral malformation and metaphyseal appearance. Nonskeletal involvement can include cleft lip/palate as well as anomalies of major organs such as the brain, eye, heart, kidneys, liver, pancreas, intestines, and genitalia. Some forms of SRTD are lethal in the neonatal period due to respiratory insufficiency secondary to a severely restricted thoracic cage, whereas others are compatible with life (summary by Huber and Cormier-Daire, 2012 and Schmidts et al., 2013).There is phenotypic overlap with the cranioectodermal dysplasias (Sensenbrenner syndrome; see CED1, {218330}).For a discussion of genetic heterogeneity of short-rib thoracic dysplasia with or without polydactyly, see SRTD1 (OMIM ).

• Generalized hypotonia
• Cleft palate
• Low-set ears
• Depressed nasal bridge
• Abnormality of the skeletal system

SOURCES: OMIM MENDELIAN