Silver-Russell Syndrome (Russell-Silver Syndrome): Symptoms, Causes and Treatment

Written by Medicover Team and Medically Reviewed by Dr K Sindhura , Pediatricians

Causes
Find a Doctor
Diagnosis
Treatment
FAQs
Book an Appointment

1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Silver-Russell syndrome (SRS), also known as Russell-Silver syndrome (RSS), is a rare genetic growth disorder characterized by poor growth before and after birth, short stature, feeding difficulties, and distinctive physical features. The condition is caused by abnormalities affecting genes involved in growth regulation, most commonly involving chromosome 11p15 or maternal uniparental disomy of chromosome 7.

Although intelligence is usually normal, some children may experience developmental or learning difficulties. Early diagnosis and multidisciplinary management can significantly improve growth, nutrition, and overall quality of life.

What Are the Types of Silver-Russell Syndrome?

Silver-Russell syndrome is not divided into recognized clinical subtypes. However, it may be classified according to the underlying genetic abnormality.

11p15 Loss of Methylation: The most common genetic cause, accounting for approximately 30-60% of affected individuals.
Maternal Uniparental Disomy of Chromosome 7 (UPD7): Accounts for approximately 5-10% of cases.
Other Genetic or Epigenetic Changes: A smaller proportion of individuals have abnormalities involving other chromosomes or genes, while the underlying cause remains unknown in some cases.

What Are the Symptoms of Silver-Russell Syndrome?

Symptoms vary among individuals but usually become apparent before or shortly after birth.

Low birth weight and being small for gestational age (SGA)
Poor growth after birth resulting in short stature
Relative macrocephaly at birth
Prominent forehead, especially during early childhood
Triangular face with a small chin
Body asymmetry, particularly involving the limbs
Curved fifth finger (clinodactyly)
Feeding difficulties and poor appetite
Low body mass index (BMI)
Episodes of hypoglycemia, especially during infancy
Delayed motor development
Speech or learning difficulties in some individuals

What Causes Silver-Russell Syndrome?

Silver-Russell syndrome results from genetic or epigenetic abnormalities that disrupt normal growth regulation.

Loss of methylation of the 11p15 imprinting center
Maternal uniparental disomy of chromosome 7 (UPD7)
Rare genetic or chromosomal abnormalities affecting growth-regulating genes
Most cases occur sporadically, although rare familial cases have been reported

When to See a Doctor for Silver-Russell Syndrome?

Medical evaluation by a Pediatric Endocrinologist or paediatrician is recommended if a child has poor growth before or after birth, feeding difficulties, body asymmetry, or delayed developmental milestones. Early diagnosis allows timely nutritional support, growth monitoring, and appropriate treatment.

Consult a healthcare provider if you notice:

Poor growth or short stature
Persistent feeding difficulties or poor weight gain
Body or limb asymmetry
Delayed motor or speech development

Seek immediate medical attention if:

Symptoms of hypoglycemia such as seizures, confusion, or loss of consciousness develop
Severe dehydration or inability to feed occurs

Early specialist care helps improve growth, nutrition, and long-term developmental outcomes.

Find Pediatricians for Russellsilver Syndrome Treatment Near You

How Is Silver-Russell Syndrome Diagnosed?

Diagnosis is based on characteristic clinical findings together with molecular genetic testing.

The Netchine-Harbison Clinical Scoring System (NH-CSS) is widely used to assess children suspected of having Silver-Russell syndrome.

Detailed medical and family history
Physical examination and growth measurements
Assessment using the Netchine-Harbison Clinical Scoring System (NH-CSS)
Methylation testing for chromosome 11p15 abnormalities
Testing for maternal uniparental disomy of chromosome 7 (UPD7)
Additional genetic testing when common abnormalities are not identified
Bone age assessment and endocrine evaluation when indicated

How Is Silver-Russell Syndrome Treated?

Treatment is individualized and focuses on improving growth, nutrition, development, and overall health.

Growth Hormone Therapy

Growth hormone treatment can improve height, body composition, and muscle strength in many children, even if growth hormone deficiency is not present.

Nutritional Support

High-calorie nutritional plans
Management of feeding difficulties
Prevention and treatment of hypoglycemia

Developmental Therapies

Speech and language therapy
Physical therapy
Occupational therapy
Educational support when learning difficulties are present

Orthopedic Care

Monitoring limb-length differences
Treatment for scoliosis or other skeletal abnormalities when needed

Regular Medical Follow-up

Monitoring growth and puberty
Endocrinology follow-up
Dental care
Genetic counseling for affected families

Your health is everything - prioritize your well-being today.

Consult Russellsilver Syndrome Doctors Today

What Are the Risk Factors for Silver-Russell Syndrome?

Most cases occur randomly, but certain inherited or epigenetic factors increase the likelihood of developing the condition.

Epigenetic abnormalities affecting chromosome 11p15
Maternal uniparental disomy of chromosome 7
Rare inherited genetic alterations affecting growth regulation
Family history in uncommon familial cases

What Are the Complications of Silver-Russell Syndrome?

Complications vary depending on symptom severity and associated medical problems.

Persistent short stature
Feeding difficulties and poor weight gain
Recurrent hypoglycemia during infancy
Limb-length discrepancy
Scoliosis or other orthopedic problems
Dental crowding or jaw abnormalities
Delayed motor or speech development
Learning difficulties
Psychosocial challenges related to growth and appearance

Can Silver-Russell Syndrome Be Prevented?

Silver-Russell syndrome cannot usually be prevented because it results from genetic or epigenetic changes. However, genetic counseling can help families understand recurrence risks and available reproductive options.

Living With Silver-Russell Syndrome

Most individuals with Silver-Russell syndrome can lead healthy and productive lives with early diagnosis and comprehensive multidisciplinary care. Regular monitoring by pediatricians, endocrinologists, nutrition specialists, orthopedic surgeons, dentists, speech therapists, and genetic counselors helps optimize growth, development, and overall quality of life. Early intervention, appropriate nutritional support, and growth hormone therapy when indicated can significantly improve long-term outcomes.

Frequently Asked Questions

1. What are the symptoms of Russell-Silver syndrome?

Symptoms may include poor growth before and after birth, short stature, feeding difficulties, body or limb asymmetry, a relatively large head, a triangular face, a prominent forehead, and delayed motor development.

2. What causes Russell-Silver syndrome?

Russell-Silver syndrome is usually caused by genetic or epigenetic changes that affect growth regulation. Common causes include abnormalities involving chromosome 11p15 or maternal uniparental disomy of chromosome 7 (UPD7).

3. How is Russell-Silver syndrome diagnosed?

Diagnosis is based on clinical features, growth measurements, and genetic or molecular testing to identify characteristic chromosome or methylation abnormalities.

4. What treatments are available for Russell-Silver syndrome?

Treatment focuses on managing symptoms and may include nutritional support, growth hormone therapy, physical and occupational therapy, treatment of feeding difficulties, and monitoring for orthopedic or developmental problems.

5. What is the prognosis for Russell-Silver syndrome?

The prognosis is generally good with appropriate medical care. Early diagnosis and treatment can improve growth, nutrition, physical development, and overall quality of life.

6. What is the life expectancy of a person with Russell-Silver syndrome?

Life expectancy is generally normal, provided there are no severe complications. Most individuals can live into adulthood with appropriate medical care and ongoing monitoring.

7. What is Silver-Russell syndrome type 4?

Silver-Russell syndrome type 4 is a rare genetic subtype associated with pathogenic variants in the HMGA2 gene. Like other forms of Silver-Russell syndrome, it is characterized by growth restriction, short stature, feeding difficulties, and distinctive facial features, although the specific clinical features may vary among affected individuals.