U.S. flag

An official website of the United States government

Format

Send to:

Choose Destination

Meier-Gorlin syndrome 1(MGORS1)

MedGen UID:
1641240
Concept ID:
C4552001
Disease or Syndrome
Synonyms: EAR, PATELLA, SHORT STATURE SYNDROME; MGORS1; Microtia, absent patellae, micrognathia syndrome
 
Gene (location): ORC1 (1p32.3)
 
Monarch Initiative: MONDO:0009143
OMIM®: 224690

Definition

The Meier-Gorlin syndrome is a rare disorder characterized by severe intrauterine and postnatal growth retardation, microcephaly, bilateral microtia, and aplasia or hypoplasia of the patellae (summary by Shalev and Hall, 2003). While almost all cases have primordial dwarfism with substantial prenatal and postnatal growth retardation, not all cases have microcephaly, and microtia and absent/hypoplastic patella are absent in some. Despite the presence of microcephaly, intellect is usually normal (Bicknell et al., 2011). Genetic Heterogeneity of Meier-Gorlin Syndrome Most forms of Meier-Gorlin syndrome are autosomal recessive disorders, including Meier-Gorlin syndrome-1; Meier-Gorlin syndrome-2 (613800), caused by mutation in the ORC4 gene (603056) on chromosome 2q23; Meier-Gorlin syndrome-3 (613803), caused by mutation in the ORC6 gene (607213) on chromosome 16q11; Meier-Gorlin syndrome-4 (613804), caused by mutation in the CDT1 gene (605525) on chromosome 16q24; Meier-Gorlin syndrome-5 (613805), caused by mutation in the CDC6 gene (602627) on chromosome 17q21; Meier-Gorlin syndrome-7 (617063), caused by mutation in the CDC45L gene (603465) on chromosome 22q11; and Meier-Gorlin syndrome-8 (617564), caused by mutation in the MCM5 gene (602696) on chromosome 22q12. An autosomal dominant form of the disorder, Meier-Gorlin syndrome-6 (616835), is caused by mutation in the GMNN gene (602842) on chromosome 6p22. [from OMIM]

Clinical features

From HPO
Cryptorchidism
MedGen UID:
8192
Concept ID:
C0010417
Congenital Abnormality
Cryptorchidism, or failure of testicular descent, is a common human congenital abnormality with a multifactorial etiology that likely reflects the involvement of endocrine, environmental, and hereditary factors. Cryptorchidism can result in infertility and increases risk for testicular tumors. Testicular descent from abdomen to scrotum occurs in 2 distinct phases: the transabdominal phase and the inguinoscrotal phase (summary by Gorlov et al., 2002).
Clitoral hypertrophy
MedGen UID:
57848
Concept ID:
C0156394
Finding
Hypertrophy of the clitoris.
Hypoplastic labia majora
MedGen UID:
107566
Concept ID:
C0566899
Finding
Undergrowth of the outer labia.
Hypoplastic labia minora
MedGen UID:
376558
Concept ID:
C1849295
Finding
Shawl scrotum
MedGen UID:
388088
Concept ID:
C1858539
Congenital Abnormality
Superior margin of the scrotum superior to the base of the penis.
Micropenis
MedGen UID:
1633603
Concept ID:
C4551492
Congenital Abnormality
Abnormally small penis. At birth, the normal penis is about 3 cm (stretched length from pubic tubercle to tip of penis) with micropenis less than 2.0-2.5 cm.
Clubfoot
MedGen UID:
3130
Concept ID:
C0009081
Congenital Abnormality
Clubfoot is a congenital limb deformity defined as fixation of the foot in cavus, adductus, varus, and equinus (i.e., inclined inwards, axially rotated outwards, and pointing downwards) with concomitant soft tissue abnormalities (Cardy et al., 2007). Clubfoot may occur in isolation or as part of a syndrome (e.g., diastrophic dysplasia, 222600). Clubfoot has been reported with deficiency of long bones and mirror-image polydactyly (Gurnett et al., 2008; Klopocki et al., 2012).
Coxa valga
MedGen UID:
116080
Concept ID:
C0239137
Finding
Coxa valga is a deformity of the hip in which the angle between the femoral shaft and the femoral neck is increased compared to age-adjusted values (about 150 degrees in newborns gradually reducing to 120-130 degrees in adults).
Genu varum
MedGen UID:
154257
Concept ID:
C0544755
Finding
A positional abnormality marked by outward bowing of the legs in which the knees stay wide apart when a person stands with the feet and ankles together.
Genu recurvatum
MedGen UID:
107486
Concept ID:
C0546964
Anatomical Abnormality
An abnormally increased extension of the knee joint, so that the knee can bend backwards.
Small hand
MedGen UID:
108279
Concept ID:
C0575802
Finding
Disproportionately small hand.
Genu valgum
MedGen UID:
154364
Concept ID:
C0576093
Anatomical Abnormality
The legs angle inward, such that the knees are close together and the ankles far apart.
Short palm
MedGen UID:
334684
Concept ID:
C1843108
Finding
Short palm.
Clinodactyly of the 5th finger
MedGen UID:
340456
Concept ID:
C1850049
Congenital Abnormality
Clinodactyly refers to a bending or curvature of the fifth finger in the radial direction (i.e., towards the 4th finger).
Patella aplasia/hypoplasia
MedGen UID:
358246
Concept ID:
C1868577
Finding
Absence or underdevelopment of the patella.
Patellar aplasia
MedGen UID:
401474
Concept ID:
C1868578
Congenital Abnormality
Absence of the patella.
Cutaneous finger syndactyly
MedGen UID:
866898
Concept ID:
C4021254
Congenital Abnormality
A soft tissue continuity in the A/P axis between two fingers that extends distally to at least the level of the proximal interphalangeal joints, or a soft tissue continuity in the A/P axis between two fingers that lies significantly distal to the flexion crease that overlies the metacarpophalangeal joint of the adjacent fingers.
Fetal growth restriction
MedGen UID:
4693
Concept ID:
C0015934
Pathologic Function
An abnormal restriction of fetal growth with fetal weight below the tenth percentile for gestational age.
Small for gestational age
MedGen UID:
65920
Concept ID:
C0235991
Finding
Smaller than normal size according to sex and gestational age related norms, defined as a weight below the 10th percentile for the gestational age.
Birth length less than 3rd percentile
MedGen UID:
340924
Concept ID:
C1855650
Finding
Failure to thrive
MedGen UID:
746019
Concept ID:
C2315100
Disease or Syndrome
Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.
Feeding difficulties in infancy
MedGen UID:
436211
Concept ID:
C2674608
Finding
Impaired feeding performance of an infant as manifested by difficulties such as weak and ineffective sucking, brief bursts of sucking, and falling asleep during sucking. There may be difficulties with chewing or maintaining attention.
Gastroesophageal reflux
MedGen UID:
1368658
Concept ID:
C4317146
Finding
A condition in which the stomach contents leak backwards from the stomach into the esophagus through the lower esophageal sphincter.
Microtia
MedGen UID:
57535
Concept ID:
C0152423
Congenital Abnormality
Underdevelopment of the external ear.
Low-set ears
MedGen UID:
65980
Concept ID:
C0239234
Congenital Abnormality
Upper insertion of the ear to the scalp below an imaginary horizontal line drawn between the inner canthi of the eye and extending posteriorly to the ear.
Atresia of the external auditory canal
MedGen UID:
78613
Concept ID:
C0266597
Congenital Abnormality
Absence or failure to form of the external auditory canal.
Hearing impairment
MedGen UID:
235586
Concept ID:
C1384666
Disease or Syndrome
A decreased magnitude of the sensory perception of sound.
Incomplete partition of the cochlea type II
MedGen UID:
892450
Concept ID:
C4025857
Finding
With incomplete partition II, the cochlea consists of 1.5 turns; the apical and middle cochlea turns are undifferentiated and form a cystic apex. The vestibule is normal while the vestibular aqueduct is always enlarged. Developmental arrest occurs at the seventh week of gestation.
Intellectual disability, mild
MedGen UID:
10044
Concept ID:
C0026106
Mental or Behavioral Dysfunction
Mild intellectual disability is defined as an intelligence quotient (IQ) in the range of 50-69.
Micrognathia
MedGen UID:
44428
Concept ID:
C0025990
Congenital Abnormality
Developmental hypoplasia of the mandible.
Osteochondritis dissecans
MedGen UID:
10494
Concept ID:
C0029421
Disease or Syndrome
A joint disorder caused by blood deprivation in the subchondral bone causing the subchondral bone to die in a process called avascular necrosis. The bone is then reabsorbed by the body, leaving the articular cartilage it supported prone to damage. The result is fragmentation (dissection) of both cartilage and bone, and the free movement of these osteochondral fragments within the joint space, causing pain and further damage.
Joint contracture of the hand
MedGen UID:
56382
Concept ID:
C0158113
Finding
Contractures of one ore more joints of the hands meaning chronic loss of joint motion due to structural changes in non-bony tissue.
Pectus carinatum
MedGen UID:
57643
Concept ID:
C0158731
Finding
A deformity of the chest caused by overgrowth of the ribs and characterized by protrusion of the sternum.
Frontal bossing
MedGen UID:
67453
Concept ID:
C0221354
Congenital Abnormality
Bilateral bulging of the lateral frontal bone prominences with relative sparing of the midline.
Hypoplasia of the maxilla
MedGen UID:
66804
Concept ID:
C0240310
Congenital Abnormality
Abnormally small dimension of the Maxilla. Usually creating a malocclusion or malalignment between the upper and lower teeth or resulting in a deficient amount of projection of the base of the nose and lower midface region.
Hemivertebrae
MedGen UID:
82720
Concept ID:
C0265677
Congenital Abnormality
Absence of one half of the vertebral body.
Flexion contracture
MedGen UID:
83069
Concept ID:
C0333068
Anatomical Abnormality
A flexion contracture is a bent (flexed) joint that cannot be straightened actively or passively. It is thus a chronic loss of joint motion due to structural changes in muscle, tendons, ligaments, or skin that prevents normal movement of joints.
Lateral clavicle hook
MedGen UID:
98426
Concept ID:
C0426805
Finding
An excessive upward convexity of the lateral clavicle.
Short ribs
MedGen UID:
98094
Concept ID:
C0426817
Finding
Reduced rib length.
Thin ribs
MedGen UID:
98095
Concept ID:
C0426818
Finding
Ribs with a reduced diameter.
Delayed skeletal maturation
MedGen UID:
108148
Concept ID:
C0541764
Finding
A decreased rate of skeletal maturation. Delayed skeletal maturation can be diagnosed on the basis of an estimation of the bone age from radiographs of specific bones in the human body.
Camptodactyly
MedGen UID:
195780
Concept ID:
C0685409
Congenital Abnormality
The distal interphalangeal joint and/or the proximal interphalangeal joint of the fingers or toes cannot be extended to 180 degrees by either active or passive extension.
Slender long bone
MedGen UID:
331446
Concept ID:
C1833144
Finding
Reduced diameter of a long bone.
Joint hypermobility
MedGen UID:
336793
Concept ID:
C1844820
Finding
The capability that a joint (or a group of joints) has to move, passively and/or actively, beyond normal limits along physiological axes.
Flat glenoid fossa
MedGen UID:
340804
Concept ID:
C1855177
Finding
Abnormally flat configuration of the glenoid fossa, also known as the glenoid cavity, which is the articular surface of the scapula that articulates with the head of the humerus.
Absent sternal ossification
MedGen UID:
341688
Concept ID:
C1857074
Finding
Lack of formation of mineralized bony tissue of the sternum.
Small anterior fontanelle
MedGen UID:
347886
Concept ID:
C1859455
Finding
Abnormally decreased size of the anterior fontanelle with respect to age-dependent norms.
Elbow dislocation
MedGen UID:
404765
Concept ID:
C2720437
Injury or Poisoning
Dislocation of the distal humerus out of the elbow joint, where the radius, ulna, and humerus meet.
Abnormal pelvic girdle bone morphology
MedGen UID:
866545
Concept ID:
C4020847
Anatomical Abnormality
An abnormality of the bony pelvic girdle, which is a ring of bones connecting the vertebral column to the femurs.
Absent glenoid fossa
MedGen UID:
867231
Concept ID:
C4021589
Finding
Lack of development of the glenoid fossa, also known as the glenoid cavity, which is the articular surface of the scapula that articulates with the head of the humerus.
Abnormal rib cage morphology
MedGen UID:
871275
Concept ID:
C4025763
Anatomical Abnormality
A morphological anomaly of the rib cage.
Microcephaly
MedGen UID:
1644158
Concept ID:
C4551563
Finding
Head circumference below 2 standard deviations below the mean for age and gender.
Emphysema
MedGen UID:
18764
Concept ID:
C0034067
Disease or Syndrome
A subcategory of chronic obstructive pulmonary disease (COPD). It occurs in people who smoke and suffer from chronic bronchitis. It is characterized by inflation of the alveoli, alveolar wall damage, and reduction in the number of alveoli, resulting in difficulty breathing.
Respiratory distress
MedGen UID:
96907
Concept ID:
C0476273
Sign or Symptom
Respiratory distress is objectively observable as the physical or emotional consequences from the experience of dyspnea. The physical presentation of respiratory distress is generally referred to as labored breathing, while the sensation of respiratory distress is called shortness of breath or dyspnea.
Blepharophimosis
MedGen UID:
2670
Concept ID:
C0005744
Anatomical Abnormality
A fixed reduction in the vertical distance between the upper and lower eyelids with short palpebral fissures.
Narrow mouth
MedGen UID:
44435
Concept ID:
C0026034
Congenital Abnormality
Distance between the commissures of the mouth more than 2 SD below the mean. Alternatively, an apparently decreased width of the oral aperture (subjective).
Microdontia
MedGen UID:
66008
Concept ID:
C0240340
Congenital Abnormality
Decreased size of the teeth, which can be defined as a mesiodistal tooth diameter (width) more than 2 SD below mean. Alternatively, an apparently decreased maximum width of tooth.
High palate
MedGen UID:
66814
Concept ID:
C0240635
Congenital Abnormality
Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective).
Short palpebral fissure
MedGen UID:
98067
Concept ID:
C0423112
Finding
Distance between the medial and lateral canthi is more than 2 SD below the mean for age (objective); or, apparently reduced length of the palpebral fissures.
Thick vermilion border
MedGen UID:
332232
Concept ID:
C1836543
Finding
Increased width of the skin of vermilion border region of upper lip.
Cleft palate
MedGen UID:
756015
Concept ID:
C2981150
Congenital Abnormality
Cleft palate is a developmental defect of the palate resulting from a failure of fusion of the palatine processes and manifesting as a separation of the roof of the mouth (soft and hard palate).
Thin skin
MedGen UID:
140848
Concept ID:
C0423757
Finding
Reduction in thickness of the skin, generally associated with a loss of suppleness and elasticity of the skin.
Hyperconvex nail
MedGen UID:
488894
Concept ID:
C0423807
Finding
When viewed on end (with the digit tip pointing toward the examiner's eye) the curve of the nail forms a tighter curve of convexity.
Long eyelashes
MedGen UID:
342955
Concept ID:
C1853738
Finding
Mid upper eyelash length >10 mm or increased length of the eyelashes (subjective).
Breech presentation
MedGen UID:
654
Concept ID:
C0006157
Pathologic Function
A position of the fetus at delivery in which the fetus enters the birth canal with the buttocks or feet first.
Breast hypoplasia
MedGen UID:
75594
Concept ID:
C0266013
Congenital Abnormality
Underdevelopment of the breast.
Strabismus
MedGen UID:
21337
Concept ID:
C0038379
Disease or Syndrome
A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.