Rod-cone dystrophy, and Abnormality of the dentition

Low match BARDET-BIEDL SYNDROME 4; BBS4

BBS4 is a rare multisystemic disorder characterized primarily by retinal dystrophy, obesity, polydactyly, and renal dysfunction that accounts for less than 3% of BBS (Katsanis et al., 2002). Anosmia has been described in patients with BBS4 (Iannaccone et al., 2005), as well as polydactyly confined to the hands (Carmi et al., 1995).For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (OMIM ).

• Intellectual disability
• Cryptorchidism
• Cognitive impairment
• Brachydactyly
• Blindness

SOURCES: OMIM MENDELIAN

Low match RETINITIS PIGMENTOSA-JUVENILE CATARACT-SHORT STATURE-INTELLECTUAL DISABILITY SYNDROME

RETINITIS PIGMENTOSA-JUVENILE CATARACT-SHORT STATURE-INTELLECTUAL DISABILITY SYNDROME Is also known as retinal dystrophy-juvenile cataract-short stature syndrome

• Global developmental delay
• Short stature
• Abnormal facial shape
• Cataract
• Malar flattening

SOURCES: ORPHANET OMIM MENDELIAN

Low match FAMILIAL PRIMARY HYPOMAGNESEMIA WITH HYPERCALCIURIA AND NEPHROCALCINOSIS WITH SEVERE OCULAR INVOLVEMENT

Familial primary hypomagnesemia with hypercalciuria and nephrocalcinosis with severe ocular involvement (FHHNCOI) is a form of familial primary hypomagnesemia (FPH, see this term), characterized by excessive magnesium and calcium renal wasting, bilateral nephrocalcinosis, progressive renal failure and severe ocular abnormalities.

FAMILIAL PRIMARY HYPOMAGNESEMIA WITH HYPERCALCIURIA AND NEPHROCALCINOSIS WITH SEVERE OCULAR INVOLVEMENT Is also known as meier-blumberg-imahorn syndrome|fhhnc with severe ocular involvement|hypercalciuria-bilateral macular coloboma syndrome|hypomagnesemia, familial, with hypercalciuria, nephrocalcinosis, and severe ocular involvement|macular coloboma, bilateral, with hyperc

• Nystagmus
• Visual impairment
• Myopia
• Renal insufficiency
• Hernia

SOURCES: OMIM MESH ORPHANET MENDELIAN

Low match BARDET-BIEDL SYNDROME 21; BBS21

BBS21 is an autosomal recessive ciliopathy characterized by obesity, postaxial polydactyly, retinal degeneration, and mild cognitive impairment (Heon et al., 2016; Khan et al., 2016).For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (OMIM ).

• Cognitive impairment
• Delayed speech and language development
• Myopia
• Blindness
• Abnormality of the dentition

SOURCES: OMIM MENDELIAN

Low match NEPHRONOPHTHISIS 1; NPHP1

Nephronophthisis is an autosomal recessive cystic kidney disease that leads to renal failure in childhood or adolescence. It is the most frequent genetic cause of renal failure in children. NPHP may be combined with extrarenal manifestations, such as liver fibrosis, situs inversus, or cardiac malformations. When nephronophthisis is combined with retinitis pigmentosa, the disorder is known as Senior-Loken syndrome (SLSN1 ); when it is combined with cerebellar vermis hypoplasia, the disorder is known as Joubert syndrome (JBTS1 ); and when it is combined with multiple developmental and neurologic abnormalities, the disorder is often known as Meckel-Gruber syndrome (MKS1 ). Because most NPHP gene products localize to the cilium or its associated structures, nephronophthisis and the related syndromes have been termed 'ciliopathies' (summary by Hoff et al., 2013).Clinical features of familial juvenile nephronophthisis include anemia, polyuria, polydipsia, isosthenuria, and death in uremia. Simms et al. (2009) provided a detailed review of nephronophthisis, including a discussion of clinical features and molecular genetics. Genetic Heterogeneity of NephronophthisisNPHP2 (OMIM ) is caused by mutation in the INVS gene (OMIM ) on chromosome 9q31; NPHP3 (OMIM ) is caused by mutation in the NPHP3 gene (OMIM ) on chromosome 3q22; NPHP4 (OMIM ) is caused by mutation in the NPHP4 gene (OMIM ) on chromosome 1p36; NPHP7 (OMIM ) is caused by mutation in the GLIS2 gene (OMIM ) on chromosome 16p13; NPHP9 (OMIM ) is caused by mutation in the NEK8 gene (OMIM ) on chromosome 17q11; NPHP11 (OMIM ) is caused by mutation in the TMEM67 gene (OMIM ) on chromosome 8q22; NPHP12 (OMIM ) is caused by mutation in the TTC21B gene (OMIM ) on chromosome 2q24; NPHP13 (OMIM ) is caused by mutation in the WDR19 gene (OMIM ) on chromosome 4p14; NPHP14 (OMIM ) is caused by mutation in the ZNF423 gene (OMIM ) on chromosome 16; NPHP15 (OMIM ) is caused by mutation in the CEP164 gene (OMIM ) on chromosome 11q; NPHP16 (OMIM ) is caused by mutation in the ANKS6 gene (OMIM ) on chromosome 9q22; NPHP18 (OMIM ) is caused by mutation in the CEP83 gene (OMIM ) on chromosome 12q22; NPHP19 (OMIM ) is caused by mutation in the DCDC2 gene (OMIM ) on chromosome 6p22; and NPHP20 (OMIM ) is caused by mutation in the MAPKBP1 gene (OMIM ) on chromosome 15q13.

NEPHRONOPHTHISIS 1; NPHP1 Is also known as nephronophthisis, familial juvenile|nph1

• Growth delay
• Anemia
• Hypertension
• Renal insufficiency
• Rod-cone dystrophy

SOURCES: OMIM ORPHANET MESH MENDELIAN

Low match USHER SYNDROME TYPE 2

Usher syndrome is a clinically and genetically heterogeneous autosomal recessive disorder characterized by sensorineural hearing deficiencies at birth and later development of progressive retinitis pigmentosa (RP). It is the most frequent cause of combined deafness and blindness in adults and affects 3 to 6% of children born with hearing impairment. In brief, patients with Usher syndrome type II have mild hearing impairment with normal vestibular responses. Type II is the most common of the 3 Usher syndromes (Eudy et al., 1998).See {276900} for clinical characterization of Usher syndrome types I, II, and III.For a discussion of genetic heterogeneity of Usher syndrome type II, see USH2A (OMIM ).

USHER SYNDROME TYPE 2 Is also known as ush2

• Hearing impairment
• Ataxia
• Nystagmus
• Sensorineural hearing impairment
• Cataract

SOURCES: ORPHANET OMIM MENDELIAN

Low match RETINITIS PIGMENTOSA 55; RP55

• Rod-cone dystrophy

SOURCES: OMIM MENDELIAN

Low match RETINITIS PIGMENTOSA 49; RP49

• Rod-cone dystrophy

SOURCES: OMIM MENDELIAN

Low match RETINITIS PIGMENTOSA 40; RP40

• Rod-cone dystrophy
• Abnormal light- and dark-adapted electroretinogram

SOURCES: OMIM MENDELIAN

Low match BARDET-BIEDL SYNDROME 14; BBS14

BBS14 is an autosomal recessive ciliopathy described in a single patient with features of retinitis pigmentosa, obesity, mental retardation, and renal disease (Leitch et al., 2008).For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (OMIM ).

• Intellectual disability
• Global developmental delay
• Obesity
• Rod-cone dystrophy

SOURCES: OMIM MESH MENDELIAN