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Siddiqi syndrome(SIDDIS)

MedGen UID:
1684813
Concept ID:
C5231435
Disease or Syndrome
Synonym: DEAFNESS, DYSTONIA, DEVELOPMENTAL DELAY, AND POOR GROWTH
 
Gene (location): FITM2 (20q13.12)
 
Monarch Initiative: MONDO:0032842
OMIM®: 618635

Definition

Siddiqi syndrome (SIDDIS) is an autosomal recessive disorder characterized by global developmental delay, early-onset progressive sensorineural hearing impairment, regression of motor skills, dystonia, poor overall growth, and low body mass index (BMI). More variable features may include ichthyosis-like skin abnormalities or sensory neuropathy (summary by Zazo Seco et al., 2017). [from OMIM]

Clinical features

From HPO
Urinary incontinence
MedGen UID:
22579
Concept ID:
C0042024
Finding
Loss of the ability to control the urinary bladder leading to involuntary urination.
Pes cavus
MedGen UID:
675590
Concept ID:
C0728829
Congenital Abnormality
An increase in height of the medial longitudinal arch of the foot that does not flatten on weight bearing (i.e., a distinctly hollow form of the sole of the foot when it is bearing weight).
Sensorineural hearing loss disorder
MedGen UID:
9164
Concept ID:
C0018784
Disease or Syndrome
A type of hearing impairment in one or both ears related to an abnormal functionality of the cochlear nerve.
Seizure
MedGen UID:
20693
Concept ID:
C0036572
Sign or Symptom
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.
Delayed ability to walk
MedGen UID:
66034
Concept ID:
C0241726
Finding
A failure to achieve the ability to walk at an appropriate developmental stage. Most children learn to walk in a series of stages, and learn to walk short distances independently between 12 and 15 months.
Global developmental delay
MedGen UID:
107838
Concept ID:
C0557874
Finding
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.
Limb dystonia
MedGen UID:
152944
Concept ID:
C0751093
Sign or Symptom
A type of dystonia (abnormally increased muscular tone causing fixed abnormal postures) that affects muscles of the limbs.
Developmental regression
MedGen UID:
324613
Concept ID:
C1836830
Disease or Syndrome
Loss of developmental skills, as manifested by loss of developmental milestones.
Motor delay
MedGen UID:
381392
Concept ID:
C1854301
Finding
A type of Developmental delay characterized by a delay in acquiring motor skills.
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.
Lower limb amyotrophy
MedGen UID:
870475
Concept ID:
C4024921
Finding
Muscular atrophy affecting the lower limb.
Ichthyosis
MedGen UID:
7002
Concept ID:
C0020757
Disease or Syndrome
An abnormality of the skin characterized the presence of excessive amounts of dry surface scales on the skin resulting from an abnormality of keratinization.

Professional guidelines

PubMed

Thompson PA, Siddiqi T
Hematology Am Soc Hematol Educ Program 2022 Dec 9;2022(1):329-336. doi: 10.1182/hematology.2022000345. PMID: 36485138Free PMC Article
Tam CS, Allan JN, Siddiqi T, Kipps TJ, Jacobs R, Opat S, Barr PM, Tedeschi A, Trentin L, Bannerji R, Jackson S, Kuss BJ, Moreno C, Szafer-Glusman E, Russell K, Zhou C, Ninomoto J, Dean JP, Wierda WG, Ghia P
Blood 2022 Jun 2;139(22):3278-3289. doi: 10.1182/blood.2021014488. PMID: 35196370Free PMC Article
Siddiqi OK, Ruberg FL
Trends Cardiovasc Med 2018 Jan;28(1):10-21. Epub 2017 Jul 13 doi: 10.1016/j.tcm.2017.07.004. PMID: 28739313Free PMC Article

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