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BIO 462 Final Draft Sanfilippo Syndrome

kate jaggi

Created on March 7, 2023

Kate Jaggi

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Sanfilippo Syndrome

Mucopolysaccharidosis Type 3A (MPS3A)

Kate Jaggi

"Childhood Alzheimers"

Abby Grace Foundation

Summary

  • Autosomal recessive
  • Lysosomal storage disease
  • SGSH gene (chromosome 17q25)
  • Missing or defective N-heparin N sulfatase enzyme
  • 1 in 70,000 births

Childhood Alzheimers"

Summary

  • Autosomal recessive
  • Lysosomal storage disease
  • SGSH gene (chromosome 17q25)
  • Missing or defective N-heparin N sulfatase enzyme
  • 1 in 70,000 births
  • Progressive dementia
  • Hyperactive & aggressive behavior
  • Degenerative physical systems
  • Visceromegaly (large organs)
  • Respiratory infections (leading cause of death)
    • Life expectancy of 10-20 years

SYMPTOMS

Stages of Sanfilippo Syndrome

Stages of Sanfilippo Syndrome

ONSET OF CLINICAL FEATURES

  • 2-6 years
  • Early mental & motor delays
  • Loss of language
  • Difficult to diagnose
  • Autism similarity

Stages of Sanfilippo Syndrome

ONSET OF CLINICAL FEATURES

NEUROLOGICAL DEGENERATION

  • 2-6 years
  • Early mental & motor delays
  • Loss of language
  • Difficult to diagnose
  • Autism similarity
  • 5-10 years
  • Aggressive & hyperactive behavior
  • Irregular sleep
  • Seizures
  • Chewing
  • Significant dementia

Stages of Sanfilippo Syndrome

ONSET OF CLINICAL FEATURES

NEUROLOGICAL DEGENERATION

PALLIATIVE CARE & DEATH

  • 2-6 years
  • Early mental & motor delays
  • Loss of language
  • Difficult to diagnose
  • Autism similarity
  • 10-20 years
  • Loss of motor skills (walking, talking, feeding)
  • Growing stops
  • Nonverbal
  • Palliative care
  • 5-10 years
  • Aggressive & hyperactive behavior
  • Irregular sleep
  • Seizures
  • Chewing
  • Significant dementia

Children with Sanfilippo Syndrome

HAIDYN

LOGAN

OLIVIA

Haidyn, Logan, and Lev are children with Sanfilippo syndrome whose families advocate publicly to educate & raise funds for the treatment of MPS3A

Potential Future Therapies

Provide correct form of heparin N sulfatase

Potential Future Therapies

Get rid of heparin sulfate sugar

Introduce good copies of theSGSH gene

Potential Future Therapies

Correct misfolding in heparin N sulfatase

Potential Future Therapies

Regenerate & make correct heparin N sulfatase

Potential Future Therapies

Introduce good copies of the SGSH gene

Introduce good copies of the SGSH gene

Clinical Trials

  • Early clinical trial results (Feb. 2023):
    • Sustained engraftment of SGSH gene-corrected cells
    • Higher levels of heparin N sulfatase enzyme activity
    • Children (6-24 months) gaining skills

"These are encouraging results for children living with MPS-IIIA and their families, who currently have no effective treatment options."

Resources

  • https://www.mdpi.com/1422-0067/21/21/7819
  • https://kidshealth.org/en/parents/sanfilippo-syndrome.html#:~:text=Sanfilippo%20Syndrome%20Treated%3F-,There%20is%20no%20cure%20yet%20for%20Sanfilippo%20syndrome.,could%20be%20on%20the%20way.
  • https://www.sanfilippo.org.au/blog/development-of-gene-therapies-for-sanfilippo#:~:text=Sanfilippo%20involves%20changes%20to%20one,being%20explored%2C%20including%20gene%20therapy.
  • https://www.manchester.ac.uk/discover/news/early-results-of-gene-therapy-trial-for-childhood-dementia-show-promise/

Thank You