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Spondyloepiphyseal dysplasia, kondo-fu type(SEDKF)

MedGen UID:
1683128
Concept ID:
C5193071
Disease or Syndrome
Synonym: SED WITH ELEVATED BLOOD LYSOSOMAL ENZYMES
 
Gene (location): MBTPS1 (16q23.3-24.1)
 
Monarch Initiative: MONDO:0032721
OMIM®: 618392

Definition

The Kondo-Fu type of spondyloepiphyseal dysplasia (SEDKF) is characterized by severely retarded growth and skeletal anomalies, including spondyloepiphyseal dysplasia with associated kyphosis and reduced bone mineral density. Elevated levels of blood lysosomal enzymes have also been observed (Kondo et al., 2018). [from OMIM]

Clinical features

From HPO
Brachydactyly
MedGen UID:
67454
Concept ID:
C0221357
Congenital Abnormality
Digits that appear disproportionately short compared to the hand/foot. The word brachydactyly is used here to describe a series distinct patterns of shortened digits (brachydactyly types A-E). This is the sense used here.
Delayed ossification of carpal bones
MedGen UID:
374771
Concept ID:
C1841684
Finding
Ossification of carpal bones occurs later than age-adjusted norms.
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.
Short stature
MedGen UID:
87607
Concept ID:
C0349588
Finding
A height below that which is expected according to age and gender norms. Although there is no universally accepted definition of short stature, many refer to "short stature" as height more than 2 standard deviations below the mean for age and gender (or below the 3rd percentile for age and gender dependent norms).
Decreased body weight
MedGen UID:
1806755
Concept ID:
C5574742
Finding
Abnormally low body weight.
Macrotia
MedGen UID:
488785
Concept ID:
C0152421
Congenital Abnormality
Median longitudinal ear length greater than two standard deviations above the mean and median ear width greater than two standard deviations above the mean (objective); or, apparent increase in length and width of the pinna (subjective).
Posteriorly rotated ears
MedGen UID:
96566
Concept ID:
C0431478
Congenital Abnormality
A type of abnormal location of the ears in which the position of the ears is characterized by posterior rotation (the superior part of the ears is rotated towards the back of the head, and the inferior part of the ears towards the front).
Waddling gait
MedGen UID:
66667
Concept ID:
C0231712
Finding
Weakness of the hip girdle and upper thigh muscles, for instance in myopathies, leads to an instability of the pelvis on standing and walking. If the muscles extending the hip joint are affected, the posture in that joint becomes flexed and lumbar lordosis increases. The patients usually have difficulties standing up from a sitting position. Due to weakness in the gluteus medius muscle, the hip on the side of the swinging leg drops with each step (referred to as Trendelenburg sign). The gait appears waddling. The patients frequently attempt to counteract the dropping of the hip on the swinging side by bending the trunk towards the side which is in the stance phase (in the German language literature this is referred to as Duchenne sign). Similar gait patterns can be caused by orthopedic conditions when the origin and the insertion site of the gluteus medius muscle are closer to each other than normal, for instance due to a posttraumatic elevation of the trochanter or pseudarthrosis of the femoral neck.
Delayed gross motor development
MedGen UID:
332508
Concept ID:
C1837658
Finding
A type of motor delay characterized by a delay in acquiring the ability to control the large muscles of the body for walking, running, sitting, and crawling.
Inguinal hernia
MedGen UID:
6817
Concept ID:
C0019294
Finding
Protrusion of the contents of the abdominal cavity through the inguinal canal.
Kyphosis
MedGen UID:
44042
Concept ID:
C0022821
Anatomical Abnormality
Exaggerated anterior convexity of the thoracic vertebral column.
Spondyloepiphyseal dysplasia
MedGen UID:
20916
Concept ID:
C0038015
Finding
A disorder of bone growth affecting the vertebrae and the ends of the long bones (epiphyses).
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.
Short femoral neck
MedGen UID:
373033
Concept ID:
C1836184
Finding
An abnormally short femoral neck (which is the process of bone, connecting the femoral head with the femoral shaft).
Reduced bone mineral density
MedGen UID:
393152
Concept ID:
C2674432
Finding
A reduction of bone mineral density, that is, of the amount of matter per cubic centimeter of bones.
Elevated circulating beta-glucuronidase activity
MedGen UID:
1054281
Concept ID:
CN377967
Finding
The activity of beta-glucuronidase (EC 3.2.1.31) in the blood circulation is above the upper limit of normal.
Prominent forehead
MedGen UID:
373291
Concept ID:
C1837260
Finding
Forward prominence of the entire forehead, due to protrusion of the frontal bone.
Cataract
MedGen UID:
39462
Concept ID:
C0086543
Disease or Syndrome
A cataract is an opacity or clouding that develops in the crystalline lens of the eye or in its capsule.

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