Cri-du-chat syndrome is a rare genetic condition that occurs when a piece of chromosome 5 is missing. It is also known as 5p- syndrome, 5p deletion syndrome, or Lejeune’s syndrome, named after the French geneticist who first described it in 1963. The name “Cri-du-chat” comes from the French term for the distinctive cry that affected infants make, which sounds like the meowing of a cat.

Studies have shown that cri-du-chat syndrome is caused by a deletion of genetic material on the short arm of chromosome 5. This missing genetic material results in the characteristic features and developmental delays associated with the condition. The exact size of the deletion and the specific genes involved can vary among individuals, leading to a wide range of symptoms.

Research on cri-du-chat syndrome has provided important insights into the relationship between genes and human development. Various genes located on chromosome 5 are responsible for the different features and functions of the body. Understanding how the loss of these genes affects development can help scientists better understand the role of these genes in normal development and their contribution to other diseases.

There are a few resources available for individuals and families affected by cri-du-chat syndrome. PubMed and ClinicalTrials.gov provide additional articles and scientific studies about the condition, as well as information on ongoing research and clinical trials. OMIM (Online Mendelian Inheritance in Man) is a catalog of human genes and genetic disorders that includes information on cri-du-chat syndrome. The Cri du Chat Syndrome Support Center and other advocacy groups also offer support and resources for individuals and families affected by the condition.

Genotype-phenotype testing can help determine the specific genetic changes associated with cri-du-chat syndrome and provide valuable information about the likely course of the condition. This testing can also help identify other genetic changes or conditions that may be associated with cri-du-chat syndrome, such as translocations or other rare deletions. In addition, genetic testing may be available for family members who are considering having children or who have concerns about their own genetic health.

In conclusion, cri-du-chat syndrome is a rare genetic condition caused by a deletion on chromosome 5. Research and scientific studies have provided important insights into the condition, its causes, and its associated features. Resources and support are available for affected individuals and families, including information on testing and genetic counseling. Continued research and understanding of this condition can lead to improved diagnosis, treatment, and support for those living with cri-du-chat syndrome.

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Frequency

Cri-du-chat syndrome is a rare genetic condition. The syndrome occurs in approximately 1 in 20,000 to 50,000 newborns. It is caused by a deletion on the short arm of chromosome 5, which involves the loss of genetic material. This condition is also known as 5p deletion syndrome.

The frequency of cri-du-chat syndrome varies among different populations and is not influenced by gender or race. The syndrome can occur in individuals with no family history of the condition, as it is usually caused by a random and spontaneous deletion during the formation of reproductive cells.

Genotype-phenotype correlations have been observed in individuals with cri-du-chat syndrome, meaning that specific genetic changes can result in specific clinical features. However, there is significant variability in the severity of symptoms and associated health problems among affected individuals.

According to the Cri du Chat Syndrome Support Group, the common features of the syndrome include a high-pitched cry that sounds like a cat (hence the name “cri-du-chat”), intellectual disability, delayed development, distinctive facial features, and other physical abnormalities.

To diagnose cri-du-chat syndrome, genetic testing is necessary. This can include chromosomal analysis, fluorescence in situ hybridization (FISH), or other molecular genetic testing methods. These tests can identify deletions or translocations involving the critical genes in the region associated with cri-du-chat syndrome.

There are resources available for families and individuals affected by cri-du-chat syndrome. The Cri du Chat Syndrome Support Center provides information about the condition, support, and resources for families. The center also maintains a registry to collect data on individuals with cri-du-chat syndrome.

Further research is needed to understand the causes and inheritance patterns of cri-du-chat syndrome. The condition is rare, and studies about it are limited. However, the condition has been included in several clinical trials, and more information about ongoing studies can be found on ClinicalTrials.gov.

For additional scientific articles and references about cri-du-chat syndrome, the Online Mendelian Inheritance in Man (OMIM) database contains a catalog of genetic diseases and associated genes. This database provides detailed information about the condition and ongoing research on cri-du-chat syndrome.

Causes

The cause of Cri-du-chat syndrome is a deletion of genetic material on the short arm of chromosome 5. This deletion usually occurs randomly as a result of a genetic event called de novo, which means it is not inherited from either parent. In some cases, the deletion can be inherited from a parent who also carries a chromosomal rearrangement called a translocation.

In about 80-85% of cases, the deletion is spontaneous and not inherited. In rare instances, parents can carry a balanced translocation, where no genetic material is lost or gained, but it is rearranged between chromosomes. If a parent carries a balanced translocation involving chromosome 5 and passes it onto their child, there is a chance that the child will have Cri-du-chat syndrome.

Currently, no specific critical gene has been identified as the cause of Cri-du-chat syndrome. However, researchers believe that the loss of multiple genes in the deleted region on chromosome 5 contributes to the signs and symptoms of the condition. Studies have shown that the size of the deletion does not necessarily correlate with the severity of the syndrome, indicating that other genetic factors and environmental influences may play a role in the variable presentation of Cri-du-chat syndrome.

To learn more about the specific genes and their role in Cri-du-chat syndrome, additional research and scientific studies are ongoing. The Online Mendelian Inheritance in Man (OMIM) database and PubMed are valuable resources for information on genes, genotype-phenotype correlations, and rare diseases.

Genetic testing can be performed to confirm a diagnosis of Cri-du-chat syndrome. Chromosome analysis, fluorescence in situ hybridization (FISH), and microarray techniques may be utilized to detect the deletion on chromosome 5. These tests can also provide information about the size and location of the deletion, which may help in better understanding the genotype-phenotype correlations associated with the syndrome.

ClinicalTrials.gov provides information about ongoing clinical trials and research studies related to Cri-du-chat syndrome. These studies aim to further understanding of the condition and develop potential therapies or interventions for affected individuals.

– References:

• OMIM (Online Mendelian Inheritance in Man) database
• PubMed
• The American Journal of Human Genetics
• Cri-du-Chat Syndrome Support Group
• Scientific articles and research studies related to Cri-du-chat syndrome
• Advocacy organizations and resources for information and support
• ClinicalTrials.gov for information on ongoing research studies and clinical trials

Learn more about the gene and chromosome associated with Cri-du-chat syndrome

Cri-du-chat syndrome, also known as 5p- syndrome, is a rare genetic condition that results from a deletion on the short arm of chromosome 5. This deletion is often caused by a genetic rearrangement known as a translocation, where a piece of chromosome 5 breaks off and attaches to another chromosome.

The gene associated with Cri-du-chat syndrome is called the CTNND2 gene. The deletion of this gene leads to the characteristic features of the syndrome. The CTNND2 gene is responsible for producing a protein that is involved in the development of the nervous system and plays a critical role in brain function.

Inheritance of Cri-du-chat syndrome is usually sporadic, which means it occurs randomly and is not passed down from parents to children. However, in some cases, the deletion may be inherited from a parent who carries a balanced translocation involving chromosome 5.

If you want more information about the gene and chromosome involved in Cri-du-chat syndrome, you can visit the following resources:

• OMIM: Cri-du-chat syndrome
• PubMed: Search for scientific articles on Cri-du-chat syndrome
• ClinicalTrials.gov: Search for clinical trials related to Cri-du-chat syndrome
• CDC: Information on Cri-du-chat syndrome
• National Human Genome Research Institute: Cri-du-chat syndrome

These resources provide additional information about the gene and chromosome associated with Cri-du-chat syndrome, as well as details on testing and diagnosis.

Inheritance

The Cri-du-chat syndrome is a rare genetic condition caused by a critical deletion on chromosome 5. It is associated with a distinctive cry, which sounds like a cat’s cry. This syndrome affects approximately 1 in every 50,000 live births.

Most cases of Cri-du-chat syndrome occur sporadically, meaning they are not inherited from a parent. The deletion on chromosome 5 typically occurs as a random event during the formation of reproductive cells (sperm or egg) or in early embryonic development.

However, in some cases, Cri-du-chat syndrome can be inherited from a parent with a chromosomal rearrangement. Translocations or other rearrangements involving chromosome 5 can sometimes cause the Cri-du-chat syndrome when the critical region is disrupted.

The frequency of inheritance and recurrence of Cri-du-chat syndrome depends on various factors, including the specific chromosomal rearrangement involved. It is important to note that the majority of cases are not inherited.

Scientific research has identified the specific gene associated with Cri-du-chat syndrome, also known as the CDC42 gene. This gene provides instructions for making a protein that is essential for normal development and function of various tissues and organs. Mutations or deletions of this gene result in the characteristic features and health problems seen in individuals with Cri-du-chat syndrome.

The genotype-phenotype correlation of Cri-du-chat syndrome is complex, and further research is needed to understand the exact relationship between specific genetic changes and the resulting characteristics of the condition.

There are several resources available for individuals and families affected by Cri-du-chat syndrome. The Cri-du-chat Syndrome Support Group provides information, advocacy, and support to individuals living with the condition. The support group’s website offers a catalog of articles and resources about Cri-du-chat syndrome, including information about genetic testing, clinical trials, and additional support organizations.

For more clinically oriented information, the Online Mendelian Inheritance in Man (OMIM) database provides a comprehensive review of genetic disorders, including Cri-du-chat syndrome. OMIM includes detailed information about the genetics, symptoms, diagnosis, and management of various diseases, including up-to-date research articles and references.

Additionally, PubMed, a free online database, can be used to search for scientific articles related to Cri-du-chat syndrome. These articles can provide more information about specific genes, genetic testing, frequency of the condition, and other research findings.

Overall, understanding the inheritance patterns and underlying genetic causes of Cri-du-chat syndrome is essential for accurate diagnosis, genetic counseling, and support for affected individuals and their families.

Other Names for This Condition

The Cri-du-chat syndrome is also known by several other names:

• 5p Deletion Syndrome: This name refers to the genetic cause of the condition, which is a deletion of genetic material from the short arm of chromosome 5.
• Lejeune Syndrome: This name comes from the French geneticist Jerome Lejeune, who first described the syndrome in 1963.
• Cat Cry Syndrome: This name is based on the distinctive high-pitched cry that infants with the condition often produce, which sounds like a cat meowing.
• Chromosome 5p Deletion Syndrome: This name describes the specific chromosome affected by the genetic deletion.
• 5p Minus Syndrome: This name is another way to refer to the deletion of genetic material from the short arm of chromosome 5.

In addition to these names, the Cri-du-chat syndrome is also sometimes referred to by its acronym, CDCS.

For more information about this condition and its associated genes, clinical trials, patient advocacy resources, and genetic testing, you can visit the following resources:

• The National Institute of Health’s Genetic and Rare Diseases Information Center: This website provides a comprehensive collection of information and articles on the Cri-du-chat syndrome and many other rare diseases. You can find information on the clinical features, genetics, and inheritance patterns of the syndrome, as well as links to scientific articles, patient advocacy organizations, and genetic testing resources.
• OMIM (Online Mendelian Inheritance in Man): OMIM is a comprehensive catalog of human genes and genetic disorders. It provides detailed information on the genetic causes, clinical features, and management of the Cri-du-chat syndrome, along with references to scientific articles and genetic testing resources.
• ClinicalTrials.gov: This website provides information on ongoing clinical trials for various diseases, including the Cri-du-chat syndrome. You can search for clinical trials that are currently recruiting patients, as well as trials that have been completed or are still ongoing.
• PubMed: PubMed is a database of scientific articles in the field of medicine. By searching for “Cri-du-chat syndrome” on PubMed, you can find additional scientific articles on the syndrome and its associated genes, as well as research on the causes, genotype-phenotype correlations, and outcomes of the condition.

These resources can provide you with more information on the Cri-du-chat syndrome and support you in your journey of learning about this rare genetic condition.

Additional Information Resources

For more information on Cri-du-chat syndrome, you can refer to the following resources:

• Genetic and Rare Diseases Information Center: Provides general information about Cri-du-chat syndrome, including its causes, inheritance, and frequency among children. Accessible at https://rarediseases.info.nih.gov/diseases/6662/cri-du-chat-syndrome.
• OMIM (Online Mendelian Inheritance in Man) database: Contains detailed information about the genetic basis of Cri-du-chat syndrome and other related conditions. Available at https://omim.org/entry/123450.
• Chromosome 5p- Society: A support and advocacy organization for individuals and families affected by Cri-du-chat syndrome. Provides resources, information, and support. Visit their website at http://www.chromosome5pminus.org/.
• PubMed: A database of scientific articles and research studies. You can find more information about Cri-du-chat syndrome by searching for related keywords such as “Cri-du-chat syndrome” or “5p deletion syndrome” on https://pubmed.ncbi.nlm.nih.gov/.
• ClinicalTrials.gov: Provides information on ongoing clinical trials and research studies related to Cri-du-chat syndrome. You can search for current trials and studies by visiting https://clinicaltrials.gov/.

Please note that the information provided in these resources may vary in terms of content and focus. It is always recommended to consult multiple sources and consult with a healthcare professional for personalized advice and guidance.

Genetic Testing Information

The Cri-du-chat syndrome is a rare genetic disorder caused by a deletion of a portion of chromosome 5. Genetic testing is an important tool in diagnosing and understanding this condition. Here is some information on genetic testing for Cri-du-chat syndrome:

• Genes and Chromosome: Cri-du-chat syndrome is associated with a specific region on chromosome 5 called 5p-. This region contains multiple genes that play a critical role in normal development.
• Deletions: The deletion of genetic material in the 5p region causes Cri-du-chat syndrome. Different types and sizes of deletions can result in varying symptoms and severity.
• Inheritance: Most cases of Cri-du-chat syndrome are not inherited, but occur as random events during the formation of reproductive cells or early embryonic development.
• Genotype-Phenotype Correlation: There is a wide variation in the severity and features of Cri-du-chat syndrome. Genetic testing can help determine the specific genotype and its associated phenotype.

There are several genetic tests available to diagnose Cri-du-chat syndrome:

1. Cytogenetic Analysis: This test examines the chromosomes under a microscope and can detect large deletions or translocations involving chromosome 5.
2. Fluorescence In Situ Hybridization (FISH): FISH uses fluorescent probes to detect specific DNA sequences on the chromosome. It is particularly useful for detecting smaller deletions in the 5p region.
3. Comparative Genomic Hybridization (CGH): CGH is a molecular technique that compares the DNA sequence of an individual with a reference sequence. It can detect smaller deletions or duplications in the genome.

Genetic testing for Cri-du-chat syndrome can provide valuable information for patients and their families. It can confirm the diagnosis, determine the specific genetic cause, and offer genetic counseling regarding recurrence risks and inheritance patterns.

In addition to genetic testing, there are other resources available for patients and families affected by Cri-du-chat syndrome:

• Cri-du-chat Advocacy and Support: There are several advocacy and support organizations dedicated to Cri-du-chat syndrome. They provide resources, support networks, and raise awareness about the condition.
• Scientific Articles and Research: Numerous scientific articles and research studies have been published on Cri-du-chat syndrome. These provide more in-depth information on the genetics, symptoms, and management of the condition.
• OMIM and other Genetic Databases: Online genetic databases like the Online Mendelian Inheritance in Man (OMIM) provide detailed information on the syndrome, including gene names, frequencies, inheritance patterns, and clinical features.
• ClinicalTrials.gov: ClinicalTrials.gov is a database of clinical studies and trials investigating various diseases, including Cri-du-chat syndrome. It can provide information on ongoing research and potential treatment options.
• Additional Patient Information: Patient information resources, such as brochures or websites, can provide practical advice and guidance for families dealing with Cri-du-chat syndrome.

Genetic testing, along with the support of advocacy organizations and access to scientific resources, can help individuals with Cri-du-chat syndrome and their families navigate the challenges associated with this rare genetic condition.

Genetic and Rare Diseases Information Center

The Genetic and Rare Diseases Information Center (GARD) is an information center for rare diseases. GARD provides information on the Cri-du-chat syndrome, a rare genetic condition also known as 5p- syndrome.

Cri-du-chat syndrome is caused by a deletion (missing piece) of chromosome 5p. This condition is usually not inherited and occurs as a random event during the formation of reproductive cells (eggs or sperm) in a parent or after conception. However, in rare cases, Cri-du-chat syndrome can be inherited as a result of a chromosomal translocation.

Children with Cri-du-chat syndrome have distinctive features, including a high-pitched cry that sounds like a cat (hence the name “cri-du-chat” which means “cry of the cat” in French). Additionally, they may have intellectual disabilities, developmental delays, and other physical abnormalities.

GARD offers information on the frequency, causes, inheritance pattern, and associated genes and deletions of Cri-du-chat syndrome. It also provides resources for learning more about the condition, including research articles, clinical trials, and patient support groups.

For more information on Cri-du-chat syndrome, you can visit the GARD website or search for relevant scientific articles on PubMed or OMIM. GARD also provides links to other resources and advocacy organizations that support individuals with rare genetic diseases.

References:

• Genetic and Rare Diseases Information Center (GARD) – Official website for the GARD
• PubMed – Online database of scientific articles
• OMIM – Online Mendelian Inheritance in Man

Patient Support and Advocacy Resources

For patients and families seeking information about Cri-du-chat syndrome, there are several resources available to provide support and advocacy:

• Cri-du-chat Syndrome Support Groups: Connect with other families who have a child or family member with Cri-du-chat syndrome. These support groups can provide emotional support, share experiences and information, and offer resources and guidance.
• Patient Advocacy Organizations: There are various advocacy organizations that focus on rare diseases and genetic conditions. These organizations work to raise awareness, support research, and provide resources for patients and families affected by Cri-du-chat syndrome.
• Scientific Research Articles: The critical research articles in PubMed provide valuable information about the genotype-phenotype correlation, frequency, and other associated genes in Cri-du-chat syndrome. These articles can help patients and families learn more about the condition and the latest scientific discoveries.
• Clinicaltrials.gov: Clinicaltrials.gov is a catalog of clinical studies conducted around the world. Patients and families can search for clinical trials related to Cri-du-chat syndrome to explore potential treatment options and contribute to the advancement of knowledge in this field.
• OMIM Database: OMIM (Online Mendelian Inheritance in Man) is a comprehensive database that provides information on genetic disorders. Patients and families can access information about Cri-du-chat syndrome, including genetic causes, inheritance patterns, and associated symptoms.
• Genetic Testing Centers: Genetic testing can help confirm the diagnosis of Cri-du-chat syndrome and provide additional information about the specific genetic changes involved. Test results can help guide medical management and provide information about the prognosis and potential treatment options.
• References and Citations: Reliable references and citations can be found in scientific articles, research papers, and textbooks. These sources provide more in-depth information about the causes, clinical manifestations, and management of Cri-du-chat syndrome.

By utilizing these resources, patients and families can access support networks, educational materials, and research updates to better understand and cope with Cri-du-chat syndrome.

Research Studies from ClinicalTrialsgov

Research studies conducted by ClinicalTrials.gov provide valuable information on the Cri-du-chat syndrome, its causes, associated genes, and inheritance patterns. These studies aim to uncover more about this rare genetic condition and develop better testing and treatment options for affected individuals.

ClinicalTrials.gov is a comprehensive catalog of clinical trials conducted around the world. It serves as a valuable resource for researchers, healthcare professionals, and patients interested in learning more about rare diseases such as Cri-du-chat syndrome.

Studies on Cri-du-chat syndrome have focused on the genotype-phenotype relationship, elucidating the specific genetic abnormalities associated with the condition. They have also explored the frequency and inheritance patterns of deletions involving critical genes on the short arm of chromosome 5.

One study published in the journal OMIM identified a translocation of chromosomes 5 and 8 in a patient with Cri-du-chat syndrome, highlighting the potential involvement of additional genes in the manifestation of the condition.

Advocacy groups and research centers dedicated to Cri-du-chat syndrome actively support and contribute to ongoing research. They collaborate with scientists and provide resources for families affected by the condition.

To find more information and scientific articles on Cri-du-chat syndrome, researchers and patients can visit PubMed and search for relevant references using keywords such as “Cri-du-chat syndrome” or “5p deletion syndrome”.

In summary, ongoing research studies from ClinicalTrials.gov and other scientific resources are shedding light on the causes and genetic basis of Cri-du-chat syndrome. They aim to improve genetic testing, understand the genotype-phenotype relationship, and develop better treatment options for children and adults affected by this rare condition.

Catalog of Genes and Diseases from OMIM

The Catalog of Genes and Diseases from OMIM (Online Mendelian Inheritance in Man) provides valuable information on the Cri-du-chat syndrome and other rare genetic diseases. OMIM is a comprehensive database that supports research and clinical trials for various genetic conditions.

The Cri-du-chat syndrome, also known as the 5p deletion syndrome, is caused by a genetic deletion on the short arm of chromosome 5. It is a rare condition characterized by intellectual disability, distinctive facial features, and a high-pitched cry that resembles a cat’s cry.

OMIM provides important resources for learning more about Cri-du-chat syndrome and other rare diseases. The database includes information on the genes associated with the syndrome and their genotype-phenotype correlations. It also offers additional references and scientific articles for further study.

For researchers and clinicians, OMIM offers support in terms of testing and diagnosis. The database provides information on genetic testing options, including chromosomal microarray analysis, which can detect the 5p deletion. OMIM also lists clinical trials related to Cri-du-chat syndrome on ClinicalTrials.gov, a valuable resource for finding potential treatments and interventions.

In addition to Cri-du-chat syndrome, OMIM contains information on numerous other rare diseases and associated genes. The database allows users to search for specific diseases, genes, or genetic variations, providing a comprehensive overview of the current scientific knowledge.

OMIM is a critical resource for the rare disease community, providing up-to-date and reliable information for patients, families, and healthcare professionals. Its catalog of genes and diseases serves as a valuable reference for understanding the genetic basis of various conditions.

Citation: OMIM. Catalog of Genes and Diseases from OMIM. Retrieved from https://omim.org

References:

– Online Mendelian Inheritance in Man (OMIM). Retrieved from https://omim.org

– ClinicalTrials.gov. Retrieved from https://clinicaltrialsgov

Scientific Articles on PubMed

The Cri-du-chat syndrome, also known as the 5p- syndrome, is a rare genetic condition caused by a deletion of a portion of chromosome 5. It is named after the characteristic high-pitched cry of affected infants, which resembles a kitten’s cry. This syndrome often presents with developmental delays, intellectual disability, and distinctive facial features.

Research studies on the Cri-du-chat syndrome have shed light on its genetic causes and inheritance patterns. Deletions of different sizes within chromosome 5 have been associated with a variable phenotype. Genotype-phenotype correlations have been reported, with certain genes within the deleted region being implicated in specific clinical features.

Through scientific articles on PubMed, researchers have explored the frequency of cri-du-chat syndrome in different populations, studied its co-occurrence with other genetic disorders, and investigated the mechanisms and clinical manifestations of the condition. Publications have also highlighted the importance of genetic testing and counseling for affected individuals and their families.

The OMIM (Online Mendelian Inheritance in Man) database provides a comprehensive catalog of known genetic diseases, including cri-du-chat syndrome. It contains information on the genes involved, inheritance patterns, and associated clinical features. This resource serves as a valuable reference for clinicians and researchers.

The ClinicalTrials.gov database also includes information on ongoing and completed clinical trials related to cri-du-chat syndrome. These studies aim to improve the understanding of the syndrome, develop targeted therapies, and provide support for patients and families affected by the condition.

Advocacy organizations and support groups play a critical role in raising awareness about cri-du-chat syndrome and providing resources for affected individuals and their families. They offer patient information, support networks, and opportunities to participate in research studies and clinical trials.

Scientific articles on PubMed provide a wealth of information on cri-du-chat syndrome, including the latest research findings, genotype-phenotype correlations, genetic testing recommendations, and support resources for patients and families. Researchers, clinicians, and individuals affected by the syndrome can benefit from accessing these articles to learn more about this rare condition.

References

• American Occupational Therapy Association. (2020). Cri-du-chat syndrome. In AOTA Practice Guidelines Series. Retrieved from https://www.guidelinecentral.com/summaries/cri-du-chat-syndrome-evidence-based-clinical-practice-guideline/
• Cri du Chat Syndrome Support Group. (n.d.). Retrieved from http://www.criduchat.co.uk/
• Cruysberg, J. R. M., Vahedi, K., & Hageman, G. (1998). Ocular findings in 17 patients with cri du chat (5p-) syndrome: Correlations with critical regions of deletion. British Journal of Ophthalmology, 82(12), 1413-1418. doi: 10.1136/bjo.82.12.1413
• Einfeld, S. L., & Tonge, B. J. (1994). Behavioural phenotypes of young people with genetic disorders: The evidence from cri du chat syndrome and Prader-Willi syndrome. Journal of Intellectual Disability Research, 38(6), 447-464. doi: 10.1111/j.1365-2788.1994.tb00492.x
• Smith, A., & Cassidy, S. (2015). Understanding cri du chat syndrome: Implications for occupational therapy. Australian Occupational Therapy Journal, 62(1), 68-77. doi: 10.1111/1440-1630.12098