- Retinal detachment (HP:0000541): Separation of the inner layers of the retina (neural retina) from the pigment epithelium. Evidence: PCS. Frequency: 2/2. (PMID:33693784)
- Seizure (HP:0001250): A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Single umbilical artery (HP:0001195): Single umbilical artery (SUA) is the absence of one of the two umbilical arteries surrounding the fetal bladder and in the fetal umbilical cord. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Pyloric stenosis (HP:0002021): Pyloric stenosis, also known as infantile hypertrophic pyloric stenosis, is an uncommon condition in infants characterized by abnormal thickening of the pylorus muscles in the stomach leading to gastric outlet obstruction. Clinically infants are well at birth. Then, at 3 to 6 weeks of age, the infants present with projectile vomiting, potentially leading to dehydration and weight loss. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Global developmental delay (HP:0001263): A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Bronchial wall thickening (HP:0033542): Radiological appearance of increased density around the walls of a bronchus or large bronchiole. This feature is thought to be related to edema involving the bronchial wall as well as the peribronchial interstitial space. If the cross section of a bronchus is captured in a radiograph or computed tomography image, it is said to have the appearance of a donut because of the central lucency representing the airway of the bronchus surrounded by a circular region of increased density. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Encephalocele (HP:0002084): A neural tube defect characterized by sac-like protrusions of the brain and the membranes that cover it through openings in the skull. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- High myopia (HP:0011003): A severe form of myopia with greater than -6.00 diopters. Evidence: PCS. Frequency: 2/2. (PMID:33693784)
- Vitreous floaters (HP:0100832): Deposits of various size, shape, consistency, refractive index, and motility within the eye's vitreous humor, which is normally transparent. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Chronic constipation (HP:0012450): Constipation for longer than three months with fewer than 3 bowel movements per week, straining, lumpy or hard stools, and a sensation of anorectal obstruction or incomplete defecation. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Autism (HP:0000717): Autism is a neurodevelopmental disorder characterized by impaired social interaction and communication, and by restricted and repetitive behavior. Autism begins in childhood. It is marked by the presence of markedly abnormal or impaired development in social interaction and communication and a markedly restricted repertoire of activity and interest. Manifestations of the disorder vary greatly depending on the developmental level and chronological age of the individual (DSM-IV). Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Enamel hypoplasia (HP:0006297): Developmental hypoplasia of the dental enamel. Evidence: PCS. Frequency: 2/2. (PMID:33693784)
- Abnormal pulmonary interstitial morphology (HP:0006530): Abnormality of the lung parenchyma extending to the pulmonary interstitium and leading to diffuse pulmonary fibrosis. Evidence: PCS. Frequency: 2/2. (PMID:33693784)
- Anterior cortical cataract (HP:0007795): A cataract that affects the anterior part of the cortex of the lens. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Vitreoretinopathy (HP:0007773): Ocular abnormality characterized by premature degeneration of the vitreous and the retina that may be associated with increased risk of retinal detachment. Evidence: PCS. Frequency: 2/2. (PMID:33693784)
- Recurrent respiratory infections (HP:0002205): An increased susceptibility to respiratory infections as manifested by a history of recurrent respiratory infections. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Patent ductus arteriosus (HP:0001643): In utero, the ductus arteriosus (DA) serves to divert ventricular output away from the lungs and toward the placenta by connecting the main pulmonary artery to the descending aorta. A patent ductus arteriosus (PDA) in the first 3 days of life is a physiologic shunt in healthy term and preterm newborn infants, and normally is substantially closed within about 24 hours after bith and completely closed after about three weeks. Failure of physiologcal closure is referred to a persistent or patent ductus arteriosus (PDA). Depending on the degree of left-to-right shunting, PDA can have clinical consequences. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Autosomal dominant inheritance (HP:0000006): A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in heterozygotes. In the context of medical genetics, an autosomal dominant disorder is caused when a single copy of the mutant allele is present. Males and females are affected equally, and can both transmit the disorder with a risk of 50% for each child of inheriting the mutant allele. Evidence: PCS. (PMID:33693784)
- Intellectual disability (HP:0001249): The term intellectual disability or intellectual developmental disorder is used to describe significantly sub-average intellectual and adaptive functioning based on clinical assessment and as measured by individually administered, appropriately normed, standardized and validated tests of intellectual functioning and adaptive behavior, with onset during the developmental period from infancy through adolescence. Evidence: PCS. Frequency: 1/2. (PMID:33693784)
- Micrognathia (HP:0000347): Developmental hypoplasia of the mandible. Evidence: PCS. Frequency: 2/2. (PMID:33693784)
These phenotypes are associated with the disease Knobloch syndrome 2 (OMIM:618458).