Question 1

What is PGM1-congenital disorder of glycosylation?

Accepted Answer

PGM1-congenital disorder of glycosylation is a very rare multisystem condition caused by changes in the PGM1 gene, which affects essential enzyme functions involved in glycosylation and energy metabolism. Affected individuals typically present early in life with signs such as growth delay, hypoglycemia, and abnormal liver enzyme levels. Although many organs can be involved, the condition is particularly noted for its impact on metabolic and hepatic pathways. Given its ultra-rare status, occurring in fewer than 1 in 1,000,000 people, a comprehensive genetic evaluation is crucial for diagnosis and management.

Question 2

What are the symptoms of PGM1-congenital disorder of glycosylation?

Accepted Answer

The clinical presentation of PGM1-congenital disorder of glycosylation is variable and affects multiple organ systems. Characteristic features that are consistently seen include elevated circulating hepatic transaminase concentrations, growth delay, hypoglycemia, and elevated aspartate aminotransferase levels. Many individuals also experience additional issues such as cleft palate, prolonged coagulation times (both partial thromboplastin and prothrombin time), Pierre-Robin sequence, and cardiac abnormalities like dilated cardiomyopathy, although these occur in a subset of patients. Other less common features include chronic diarrhea and hydronephrosis. Not all individuals experience all features, and severity varies considerably.

Question 3

What causes PGM1-congenital disorder of glycosylation?

Accepted Answer

PGM1-congenital disorder of glycosylation is caused by pathogenic variants in the PGM1 gene, which is critical for proper glycosylation processes and energy metabolism. The condition is inherited in an autosomal recessive pattern, meaning that an affected individual has received one altered copy of the gene from each parent. This condition is more common when parents share a common ancestor, as both are more likely to carry the same rare genetic variant, leading to a recurrence risk of 25% per pregnancy. Genetic counseling is recommended to help families understand the implications and guide future family planning. Associated genes include PGM1.

Question 4

How is PGM1-congenital disorder of glycosylation inherited?

Accepted Answer

PGM1-congenital disorder of glycosylation follows an autosomal recessive inheritance pattern. This means a child must inherit a copy of the altered gene from both parents to develop the condition. Parents who each carry one copy typically do not show symptoms.

Question 5

How rare is PGM1-congenital disorder of glycosylation?

Accepted Answer

PGM1-congenital disorder of glycosylation is classified as very rare. The estimated prevalence is approximately <1 in 1,000,000. Because rare disease data can be limited, actual numbers may differ from published estimates.

Question 6

How is PGM1-congenital disorder of glycosylation diagnosed?

Accepted Answer

Diagnosis of PGM1-congenital disorder of glycosylation is confirmed through molecular genetic testing that identifies pathogenic variants in the PGM1 gene. Clinical evaluation that takes into account the characteristic findings such as abnormal liver enzymes, growth delay, and hypoglycemia aids in guiding genetic testing. Because the symptoms can overlap with other conditions, definitive diagnosis relies on the genetic confirmation.

Question 7

Are there treatments for PGM1-congenital disorder of glycosylation?

Accepted Answer

Currently, management focuses on supportive care and symptom management, as no FDA-approved treatments or foundational therapies are available for PGM1-congenital disorder of glycosylation. Treatment is tailored to the individual and typically involves assembling a multidisciplinary team to address the various organ systems affected. Regular surveillance is an essential part of long-term care, helping to detect complications such as cardiac issues, liver dysfunction, or metabolic disturbances early. Genetic counseling is recommended, and patients should discuss treatment options with their healthcare team to determine the most appropriate approach for their specific situation.

Question 8

Are there clinical trials for PGM1-congenital disorder of glycosylation?

Accepted Answer

Yes, there are currently 2 active clinical trials for PGM1-congenital disorder of glycosylation registered on ClinicalTrials.gov. Clinical trials test new treatments, procedures, or approaches. Your healthcare provider can help determine if a trial might be appropriate for your situation. Visit the Treatment section of this page for more details.

Question 9

What complications can arise from PGM1-congenital disorder of glycosylation?

Accepted Answer

Complications from PGM1-congenital disorder of glycosylation can vary widely among individuals. Some may experience significant health challenges like cardiac issues, liver dysfunction, or metabolic disturbances. Regular check-ups are important to catch these complications early and manage them effectively.

Question 10

How does PGM1-congenital disorder of glycosylation affect daily life?

Accepted Answer

Living with PGM1-congenital disorder of glycosylation can involve managing symptoms like growth delay and hypoglycemia. Families often need to work closely with a healthcare team to monitor health and adjust care as needed. Supportive care is essential to help individuals lead the best quality of life possible.

Question 11

What is the prognosis for someone with PGM1-congenital disorder of glycosylation?

Accepted Answer

The prognosis for PGM1-congenital disorder of glycosylation varies greatly depending on the severity of symptoms and the age at which a person is diagnosed. Some individuals may face significant health challenges, while others can achieve periods of stability with proper care. Ongoing research is helping to improve outcomes over time.

Question 12

What specialists should be involved in the care of someone with PGM1-congenital disorder of glycosylation?

Accepted Answer

Care for someone with PGM1-congenital disorder of glycosylation often requires a multidisciplinary team of specialists. This may include geneticists, metabolic specialists, and other healthcare providers who understand the condition. Working together, they can provide comprehensive care tailored to the individual's needs.

Organ System	Phenotype Count	Example Features
Digestive system	9	Hepatic steatosis, Enlarged liver (hepatomegaly), Chronic hepatitis
Heart and blood vessels	7	Aborted sudden cardiac death, Ventricular septal defect, Tachycardia
Lab test results	4	Elevated creatine kinase (muscle enzyme) (elevated circulating creatine kinase concentration), Elevated circulating alanine aminotransferase concentration, Elevated circulating hepatic transaminase concentration
Brain and nerves	4	Cerebral venous thrombosis, Exercise intolerance, Global developmental delay
Growth and development	3	Short stature, Decreased serum insulin-like growth factor 1, Growth delay
Muscles	3	Low muscle tone (hypotonia), Muscle weakness, Rhabdomyolysis
Hormones	2	Decreased serum insulin-like growth factor 1, Delayed puberty
Lungs and breathing	2	Dyspnea, High blood pressure in lung arteries (pulmonary arterial hypertension)
Head and neck	1	Cleft palate
Ears	1	Recurrent otitis media

Research Type	Count	% of Total
Patient case studies	13	42%
Laboratory research	10	32%
Disease patterns and progression	3	10%
Research summaries	2	6%
Testing and diagnosis research	1	3%
Clinical study results	1	3%
New treatment approaches	1	3%

Kisho

PGM1-congenital disorder of glycosylation

Overview

Clinical Presentation

Explore clinical features

Genetic Landscape

Diagnosis

Treatment

Orphan Drug Designations

Clinical Trials

Prognosis

Research Landscape

Recent Publications

Medical References

External Resources

OMIM

Orphanet

GARD

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

PGM1-congenital disorder of glycosylation

Overview

Clinical Presentation

Explore clinical features

Genetic Landscape

Diagnosis

Treatment

Orphan Drug Designations

Clinical Trials

Prognosis

Research Landscape

Recent Publications

Medical References

External Resources

OMIM

Orphanet

GARD

Related Diseases

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

What is PGM1-congenital disorder of glycosylation?

What are the symptoms of PGM1-congenital disorder of glycosylation?

What causes PGM1-congenital disorder of glycosylation?

How is PGM1-congenital disorder of glycosylation inherited?

How rare is PGM1-congenital disorder of glycosylation?

How is PGM1-congenital disorder of glycosylation diagnosed?

Are there treatments for PGM1-congenital disorder of glycosylation?

Are there clinical trials for PGM1-congenital disorder of glycosylation?

What complications can arise from PGM1-congenital disorder of glycosylation?

How does PGM1-congenital disorder of glycosylation affect daily life?

What is the prognosis for someone with PGM1-congenital disorder of glycosylation?

What specialists should be involved in the care of someone with PGM1-congenital disorder of glycosylation?