Total 75 clinical symptoms reported for Simpson-Golabi-Behmel syndrome type 1 
Abnormal rib morphology An anomaly of the rib.
 
Synonyms:Abnormality of the ribs; Rib abnormalities; Rib anomalies
Very frequent
Broad foot A foot for which the measured width is above the 95th centile for age; or, a foot that appears disproportionately wide for its length.
 
Synonyms:Broad feet; Broad foot; Wide foot
Very frequent
Coarse facial features Absence of fine and sharp appearance of brows, nose, lips, mouth, and chin, usually because of rounded and heavy features or thickened skin with or without thickening of subcutaneous and bony tissues.
 
Synonyms:Coarse face; Coarse facial appearance; Coarse facial features; Coarse facies
Very frequent
Cryptorchidism Testis in inguinal canal. That is, absence of one or both testes from the scrotum owing to failure of the testis or testes to descend through the inguinal canal to the scrotum.
 
Synonyms:Cryptorchism; Undescended testes; Undescended testis
Very frequent
Hepatomegaly Abnormally increased size of the liver.
 
Synonyms:Enlarged liver
Very frequent
Hypertelorism Interpupillary distance more than 2 SD above the mean (alternatively, the appearance of an increased interpupillary distance or widely spaced eyes).
 
Synonyms:Excessive orbital separation; Increased distance between eye sockets; Increased distance between eyes; Increased interpupillary distance; Ocular hypertelorism; Wide-set eyes; Widely spaced eyes; Widened interpupillary distance
Very frequent
Macrocephaly Occipitofrontal (head) circumference greater than 97th centile compared to appropriate, age matched, sex-matched normal standards. Alternatively, a apparently increased size of the cranium.
 
Synonyms:Increased size of cranium; Increased size of skull; Large head; Large head circumference; Macrocephalus; Macrocrania; Megacephaly
Very frequent
Macroglossia Increased length and width of the tongue.
 
Synonyms:Abnormally large tongue; Hyperplasia of the tongue; Hypertrophy of the tongue; Increased size of tongue; Large tongue; Tongue hypertrophy
Very frequent
Mandibular prognathia Abnormal prominence of the chin related to increased length of the mandible.
 
Synonyms:Big lower jaw; Big mandible; Enlarged mandible; Enlargement of mandible; Hyperplasia of lower jaw; Increased projection of lower jaw; Increased projection of mandible; Increased size of lower jaw; Large lower jaw; Large mandible; Lower jaw excess; Lower jaw hyperplasia; Macromandible; Mandible prognathism; Mandibular excess; Mandibular hyperplasia; Mandibular macrognathia; Mandibular prognathism; Prognathia; Prognathism; Prominent chin; Prominent jaw; Prominent lower jaw; Prominent mandible; Relative mandibular prognathism
Very frequent
Multicystic kidney dysplasia Multicystic dysplasia of the kidney is characterized by multiple cysts of varying size in the kidney and the absence of a normal pelvicaliceal system. The condition is associated with ureteral or ureteropelvic atresia, and the affected kidney is nonfunctional.
 
Synonyms:Multicystic dysplastic kidney; Multicystic kidneys; Multicystic renal dysplasia
Very frequent
Postaxial hand polydactyly Supernumerary digits located at the ulnar side of the hand (that is, on the side with the fifth finger).
 
Synonyms:Extra little finger; Extra pinkie finger; Extra pinky finger; Polydactyly affecting the 5th finger; Postaxial polydactyly of fingers; Postaxial polydactyly of hand; Postaxial polydactyly of hands
Very frequent
Short foot A measured foot length that is more than 2 SD below the mean for a newborn of 27 - 41 weeks gestation, or foot that is less than the 3rd centile for individuals from birth to 16 years of age (objective). Alternatively, a foot that appears disproportionately short (subjective).
 
Synonyms:Hypoplastic feet; Short feet; Short foot; Small feet
Very frequent
Short toe A toe that appears disproportionately short compared to the foot.
 
Synonyms:Brachydactyly of the foot; Hypoplasia of the toe; Hypoplastic toes; Short foot phalanges; Short toe; Short toes; Stubby toes
Very frequent
Splenomegaly Abnormal increased size of the spleen.
 
Synonyms:Increased spleen size; Large spleen
Very frequent
Supernumerary nipple Presence of more than two nipples.
 
Synonyms:accessory mamilla; Accessory nipple; Increased nipple number
Very frequent
Tall stature A height above that which is expected according to age and sex norms.
 
Synonyms:Accelerated linear growth; Increased body height; Increased linear growth; Tall stature
Very frequent
Ventricular septal defect A hole between the two bottom chambers (ventricles) of the heart. The defect is centered around the most superior aspect of the ventricular septum.
 
Synonyms:Hole in heart wall separating two lower heart chambers; Ventricular septal defects; Ventriculoseptal defect; VSD
Very frequent
Vertebral fusion A developmental defect leading to the union of two adjacent vertebrae.
 
Synonyms:Congenital spinal fusion; Congenitally fused vertebrae; Fusion of vertebral bodies; Vertebral body fusion
Very frequent
Vertebral segmentation defect An abnormality related to a defect of vertebral separation during development.
 
Synonyms:Abnormal spinal segmentation
Very frequent
Wide mouth Distance between the oral commissures more than 2 SD above the mean. Alternatively, an apparently increased width of the oral aperture (subjective).
 
Synonyms:Broad mouth; Large mouth; Large oral aperture; Macrostomia; Wide mouth
Very frequent