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Spastic paraplegia 82, autosomal recessive(SPG82)

MedGen UID:
1710411
Concept ID:
C5394037
Disease or Syndrome
Synonym: SPG82
 
Gene (location): PCYT2 (17q25.3)
 
Monarch Initiative: MONDO:0032906
OMIM®: 618770

Definition

Autosomal recessive spastic paraplegia-82 (SPG82) is a progressive neurologic disorder characterized by global developmental delay apparent from infancy, significant motor impairment, and progressive spasticity mainly affecting the lower limbs. Some patients never achieve walking, whereas others lose the ability to walk or walk with an unsteady gait. Additional features include variably impaired intellectual development with language difficulties, ocular anomalies, such as nystagmus and visual impairment, and seizures. Brain imaging shows progressive cerebral and cerebellar atrophy, as well as white matter hyperintensities. Based on the additional abnormalities, the disorder can be classified as a type of complicated SPG (summary by Vaz et al., 2019). For a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see SPG5A (270800). [from OMIM]

Clinical features

From HPO
Spasticity
MedGen UID:
7753
Concept ID:
C0026838
Sign or Symptom
A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes.
Babinski sign
MedGen UID:
19708
Concept ID:
C0034935
Finding
Upturning of the big toe (and sometimes fanning of the other toes) in response to stimulation of the sole of the foot. If the Babinski sign is present it can indicate damage to the corticospinal tract.
Hyperreflexia
MedGen UID:
57738
Concept ID:
C0151889
Finding
Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.
Cerebral atrophy
MedGen UID:
116012
Concept ID:
C0235946
Disease or Syndrome
Atrophy (wasting, decrease in size of cells or tissue) affecting the cerebrum.
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.
Delayed speech and language development
MedGen UID:
105318
Concept ID:
C0454644
Finding
A degree of language development that is significantly below the norm for a child of a specified age.
Focal-onset seizure
MedGen UID:
199670
Concept ID:
C0751495
Disease or Syndrome
A focal-onset seizure is a type of seizure originating within networks limited to one hemisphere. They may be discretely localized or more widely distributed, and may originate in subcortical structures.
Developmental regression
MedGen UID:
324613
Concept ID:
C1836830
Disease or Syndrome
Loss of developmental skills, as manifested by loss of developmental milestones.
Intellectual disability
MedGen UID:
811461
Concept ID:
C3714756
Mental or Behavioral Dysfunction
Intellectual disability, previously referred to as mental retardation, is characterized by subnormal intellectual functioning that occurs during the developmental period. It is defined by an IQ score below 70.
Bilateral tonic-clonic seizure with generalized onset
MedGen UID:
1368929
Concept ID:
C4476643
Sign or Symptom
A bilateral tonic-clonic seizure with generalized onset is a type of bilateral tonic-clonic seizure characterized by generalized onset; these seizures rapidly engage networks in both hemispheres at the start of the seizure.
Delayed ability to sit
MedGen UID:
1368737
Concept ID:
C4476710
Finding
A failure to achieve the ability to sit at an appropriate developmental stage. Most children sit with support at 6 months of age and sit steadily without support at 9 months of age.
Nystagmus
MedGen UID:
45166
Concept ID:
C0028738
Disease or Syndrome
Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.
Optic atrophy
MedGen UID:
18180
Concept ID:
C0029124
Disease or Syndrome
Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.
Reduced visual acuity
MedGen UID:
65889
Concept ID:
C0234632
Finding
Diminished clarity of vision.

Recent clinical studies

Etiology

Fereshtehnejad SM, Saleh PA, Oliveira LM, Patel N, Bhowmick S, Saranza G, Kalia LV
Neurol Sci 2023 Mar;44(3):947-959. Epub 2022 Nov 28 doi: 10.1007/s10072-022-06516-8. PMID: 36441344Free PMC Article
Yang JO, Yoon JY, Sung DH, Yun S, Lee JJ, Jun SY, Halder D, Jeon SJ, Woo EJ, Seok JM, Cho JW, Jang JH, Choi JK, Kim BJ, Kim NS
Genomics 2021 Nov;113(6):4136-4148. Epub 2021 Oct 27 doi: 10.1016/j.ygeno.2021.10.014. PMID: 34715294
Rezende Filho FM, Bremner F, Pedroso JL, de Andrade JBC, Marianelli BF, Lourenço CM, Marques-Júnior W, França MC Jr, Kok F, Sallum JMF, Parkinson MH, Barsottini OG, Giunti P
Mov Disord 2021 Sep;36(9):2027-2035. Epub 2021 Apr 23 doi: 10.1002/mds.28612. PMID: 33893680
Ruano L, Melo C, Silva MC, Coutinho P
Neuroepidemiology 2014;42(3):174-83. Epub 2014 Mar 5 doi: 10.1159/000358801. PMID: 24603320
Racis L, Tessa A, Di Fabio R, Storti E, Agnetti V, Casali C, Santorelli FM, Pugliatti M
J Neurol 2014 Jan;261(1):52-9. Epub 2013 Oct 20 doi: 10.1007/s00415-013-7151-4. PMID: 24141732

Diagnosis

Fereshtehnejad SM, Saleh PA, Oliveira LM, Patel N, Bhowmick S, Saranza G, Kalia LV
Neurol Sci 2023 Mar;44(3):947-959. Epub 2022 Nov 28 doi: 10.1007/s10072-022-06516-8. PMID: 36441344Free PMC Article
Yang JO, Yoon JY, Sung DH, Yun S, Lee JJ, Jun SY, Halder D, Jeon SJ, Woo EJ, Seok JM, Cho JW, Jang JH, Choi JK, Kim BJ, Kim NS
Genomics 2021 Nov;113(6):4136-4148. Epub 2021 Oct 27 doi: 10.1016/j.ygeno.2021.10.014. PMID: 34715294
Rezende Filho FM, Bremner F, Pedroso JL, de Andrade JBC, Marianelli BF, Lourenço CM, Marques-Júnior W, França MC Jr, Kok F, Sallum JMF, Parkinson MH, Barsottini OG, Giunti P
Mov Disord 2021 Sep;36(9):2027-2035. Epub 2021 Apr 23 doi: 10.1002/mds.28612. PMID: 33893680
Du J
J Clin Neurosci 2021 Mar;85:67-71. Epub 2021 Jan 15 doi: 10.1016/j.jocn.2020.11.036. PMID: 33581793
Ruano L, Melo C, Silva MC, Coutinho P
Neuroepidemiology 2014;42(3):174-83. Epub 2014 Mar 5 doi: 10.1159/000358801. PMID: 24603320

Prognosis

Yang JO, Yoon JY, Sung DH, Yun S, Lee JJ, Jun SY, Halder D, Jeon SJ, Woo EJ, Seok JM, Cho JW, Jang JH, Choi JK, Kim BJ, Kim NS
Genomics 2021 Nov;113(6):4136-4148. Epub 2021 Oct 27 doi: 10.1016/j.ygeno.2021.10.014. PMID: 34715294
Miura S, Morikawa T, Fujioka R, Kosaka K, Yamada K, Hattori G, Motomura M, Taniwaki T, Shibata H
Eur J Med Genet 2016 Aug;59(8):413-6. Epub 2016 May 20 doi: 10.1016/j.ejmg.2016.05.010. PMID: 27216551

Clinical prediction guides

Yang JO, Yoon JY, Sung DH, Yun S, Lee JJ, Jun SY, Halder D, Jeon SJ, Woo EJ, Seok JM, Cho JW, Jang JH, Choi JK, Kim BJ, Kim NS
Genomics 2021 Nov;113(6):4136-4148. Epub 2021 Oct 27 doi: 10.1016/j.ygeno.2021.10.014. PMID: 34715294
Rezende Filho FM, Bremner F, Pedroso JL, de Andrade JBC, Marianelli BF, Lourenço CM, Marques-Júnior W, França MC Jr, Kok F, Sallum JMF, Parkinson MH, Barsottini OG, Giunti P
Mov Disord 2021 Sep;36(9):2027-2035. Epub 2021 Apr 23 doi: 10.1002/mds.28612. PMID: 33893680
Du J
J Clin Neurosci 2021 Mar;85:67-71. Epub 2021 Jan 15 doi: 10.1016/j.jocn.2020.11.036. PMID: 33581793
Miura S, Morikawa T, Fujioka R, Kosaka K, Yamada K, Hattori G, Motomura M, Taniwaki T, Shibata H
Eur J Med Genet 2016 Aug;59(8):413-6. Epub 2016 May 20 doi: 10.1016/j.ejmg.2016.05.010. PMID: 27216551
Goizet C, Boukhris A, Durr A, Beetz C, Truchetto J, Tesson C, Tsaousidou M, Forlani S, Guyant-Maréchal L, Fontaine B, Guimarães J, Isidor B, Chazouillères O, Wendum D, Grid D, Chevy F, Chinnery PF, Coutinho P, Azulay JP, Feki I, Mochel F, Wolf C, Mhiri C, Crosby A, Brice A, Stevanin G
Brain 2009 Jun;132(Pt 6):1589-600. Epub 2009 May 12 doi: 10.1093/brain/awp073. PMID: 19439420

Recent systematic reviews

Fereshtehnejad SM, Saleh PA, Oliveira LM, Patel N, Bhowmick S, Saranza G, Kalia LV
Neurol Sci 2023 Mar;44(3):947-959. Epub 2022 Nov 28 doi: 10.1007/s10072-022-06516-8. PMID: 36441344Free PMC Article
Du J
J Clin Neurosci 2021 Mar;85:67-71. Epub 2021 Jan 15 doi: 10.1016/j.jocn.2020.11.036. PMID: 33581793
Ruano L, Melo C, Silva MC, Coutinho P
Neuroepidemiology 2014;42(3):174-83. Epub 2014 Mar 5 doi: 10.1159/000358801. PMID: 24603320

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