Interventions for childhood apraxia of speech

Expanding the phenotype of Kleefstra syndrome: speech, language and cognition in 103 individuals

OBJECTIVES

Speech and language impairments are core features of the neurodevelopmental genetic condition Kleefstra syndrome. Communication has not been systematically examined to guide intervention recommendations. We define the speech, language and cognitive phenotypic spectrum in a large cohort of individuals with Kleefstra syndrome.

METHOD

103 individuals with Kleefstra syndrome (40 males, median age 9.5 years, range 1-43 years) with pathogenic variants (52 9q34.3 deletions, 50 intragenic variants, 1 balanced translocation) were included. Speech, language and non-verbal communication were assessed. Cognitive, health and neurodevelopmental data were obtained.

RESULTS

The cognitive spectrum ranged from average intelligence (12/79, 15%) to severe intellectual disability (12/79, 15%). Language ability also ranged from average intelligence (10/90, 11%) to severe intellectual disability (53/90, 59%). Speech disorders occurred in 48/49 (98%) verbal individuals and even occurred alongside average language and cognition. Developmental regression occurred in 11/80 (14%) individuals across motor, language and psychosocial domains. Communication aids, such as sign and speech-generating devices, were crucial for 61/103 (59%) individuals including those who were minimally verbal, had a speech disorder or following regression.

CONCLUSIONS

The speech, language and cognitive profile of Kleefstra syndrome is broad, ranging from severe impairment to average ability. Genotype and age do not explain the phenotypic variability. Early access to communication aids may improve communication and quality of life.

A single case experimental design study using an operationalised version of the Kaufman Speech to Language Protocol for children with childhood apraxia of speech

PURPOSE

A Phase I study was conducted to examine the treatment effectiveness of the Kaufman Speech to Language Protocol using a research-operationalised protocol. It was hypothesised that articulatory accuracy would improve as a result of the treatment and that these improvements would be maintained after treatment was discontinued.

METHOD

A single case experimental design was used to evaluate the effectiveness of the Kaufman Speech to Language Protocol. Four children with a confirmed childhood apraxia of speech diagnosis were included in this study. Each child received 12 individual 1 hr treatment sessions that each consisted of an approximation setting phase and a practice phase. Probe data was collected during treatment and at post-treatment time points to measure treatment effectiveness and to measure changes in the untreated words. Untreated (control) sounds were included to test whether recorded improvements in articulatory accuracy could be attributed to the Kaufman Speech to Language Protocol.

RESULT

Two of the four children demonstrated a response to the intervention and maintenance of these changes, while the two remaining children demonstrated some generalisation in the absence of improved target (treatment) words. No specific child factors were clearly associated with positive treatment outcomes.

CONCLUSION

This study replicated the findings of an earlier pilot study and found that the operationalised protocol for the Kaufman Speech to Language Protocol is effective in improving articulatory accuracy for some children with childhood apraxia of speech. Additional replication with a further refined treatment protocol and a larger sample size is needed to support a recommendation of clinical use of the Kaufman Speech to Language Protocol.

Interventions for Developmental Language Delay and Disorders

BACKGROUND

Approximately 9.9 % of children present with difficulties in language development (DLD), 7.6 % without serious additional impairments and 2.3 % associated with languagerelevant comorbidities, e.g., hearing loss. Notably, in a consensus statement by experts in German-speaking countries, in the guideline presented here, and further in this article, all of these disorders are referred to as "developmental language disorders" (DLD), whereas the international consortium CATALISE only refers to those without comorbidities as DLD. DLDs are among the most commonly treated childhood disorders and, if persistent, often reduce educational and socio-economic outcome. Children in their third year of life with developmental language delay (late talkers, LT) are at risk of a later DLD.

METHODS

This German interdisciplinary clinical practice guideline reflects current knowledge regarding evidence-based interventions for developmental language delay and disorders. A systematic literature review was conducted on the effectiveness of interventions for DLD.

RESULTS

The guideline recommends parent training (Hedges g = 0.38 to 0.82) for LTs with expressive language delay, language therapy (Cohen's d = -0.20 to 0.90) for LTs with additional receptive language delay or further DLD risk factors, phonological or integrated phonological treatment methods (Cohen's d = 0.89 to 1.04) for phonological speech sound disorders (SSDs), a motor approach for isolated phonetic SSDs (non-DLD), and for lexical-semantic and morpho-syntactic impairments combinations of implicit and explicit intervention approaches (including input enrichment, modeling techniques, elicitation methods, creation of production opportunities, metalinguistic- approaches, visualizations; Cohen's d = 0.89-1.04). Recom mendations were also made for DLD associated with pragmatic-communicative impairment, bi-/ multilingualism, hearing loss, intellectual disability, autism-spectrum disorders, selective mutism, language- relevant syndromes or multiple disabilities, and for intensive inpatient language rehabilitation.

CONCLUSION

Early parent- and child-centered speech and language intervention implementing evidence-based intervention approaches, frequency, and settings, combined with educational language support, can improve the effectiveness of management of developmental language delay and disorders.

Treatment approaches to Motor Speech Disorders: A step towards Evidence Based Practice

Motor Speech Disorders is an umbrella term for a set of separate dysfunctions of speech outcome associated with neurological disorders. Motor speech disorders (MSD) are classified as Speech Motor delay (SMD), Childhood dysarthria (CD), Childhood Apraxia of Speech (CAS), and Concurrent CD and CAS. The incidence and prevalence of MSD in population is uncertain. A research gap exists, making evidence-based practice questionable as regards intervention for MSD and is an area of research. Hence, current narrative review was conducted to review and highlight treatment of MSD since evidence-based treatment approach may benefit patient even years after a brain lesion. To achieve this objective literature search was conducted using search engines and data bases including google, google scholar, web of science & PubMed from 1998 to 2023 with keywords "motor speech disorder, dysarthria, apraxia, speech motor delay and combinations of these words with English language and no other limitations. Our search revealed 170 articles, news, publications of which 34 were used for review (Fig.1).

Guiding Mothers About Early Detection and Addressing Speech Delay and Disorders Among Children in a Rural Setup

Introduction Speech is one of the most important milestones to be achieved by a growing child. The significance of being informed about different pediatric speech abnormalities, especially to mothers, allows them to help their children in cases of irregularities in the maturation in this domain. Aim and objectives The study aimed to assess and educate mothers on the important milestones of speech delay in children and make them address the issue and be aware of various corrective measures to treat the underlying conditions of speech disorders in children. The objectives of the study include understanding the pre-acquired knowledge of the mothers regarding the delay in speech in children, imparting knowledge regarding different speech disorders and their management, spreading awareness on how to seek help for various underlying causes of speech irregularities or delay, and to train the mothers into approaching the challenges in an orderly manner. Methods A study was conducted to guide rural mothers visiting the Obstetrics and Gynecology and Pediatric out-patient departments and Neonatal wards in a rural tertiary care hospital situated in the Sawangi Meghe village of Wardha City, Maharashtra, India, about the detection and treatment of children with disabilities of speech as early as possible. The mothers' knowledge was assessed before and after the study with the help of questionnaires, and basic understandable information on different types, causes, symptomatology, and management of speech delay and disorders among children was explained with the help of group discussions and posters. Results The motive behind this study was to be aware of facts known by the rural mothers, their actions on coming across such presentations by their children, cues that they would pick up, and the need to ask for help at the appropriate time were assessed and elaborated if not known by them. The Relative Learning Gain and Normalized Gain were calculated to be 76.43% and 0.74 (high gain), respectively, and out of the total subjects, 97.16% of mothers voted that this study proved helpful, and six mothers (4.23%) benefited with the intervention and were referred to experts for evaluation of their children. Conclusion Awareness in this field is necessary to manage children's development, especially by their mothers. Knowing the prevalence of knowledge in mothers may build an association with the prevalence of the recognized cases of speech disorders in children. Evaluation at different community levels may be conducted to gauge the need to impart required knowledge about speech disabilities in children to the maternal population. Future research and the impartation of knowledge to caregivers are vital to promote vigilant and systematic action to be taken regarding the proper growth of their children.

Dynamic Temporal and Tactile Cueing: Quantifying Speech Motor Changes and Individual Factors That Contribute to Treatment Gains in Childhood Apraxia of Speech

PURPOSE

Speech motor skill is refined over the course of practice, which is commonly reflected by increased accuracy and consistency. This research examined the relationship between auditory-perceptual ratings of word accuracy and measures of speech motor timing and variability at pre- and posttreatment in children with childhood apraxia of speech (CAS). Furthermore, the degree to which individual patterns of baseline probe word accuracy, receptive language, and cognition predicted response to treatment was explored.

METHOD

Probe data were collected from seven children with CAS (aged 2;5-5;0 [years;months]) who received 6 weeks of Dynamic Temporal and Tactile Cueing (DTTC) treatment. Using a multidimensional approach to measuring speech performance, auditory-perceptual (whole-word accuracy), acoustic (whole-word duration), and kinematic (jaw movement variability) analyses were conducted on probe words produced pre- and posttreatment. Standardized tests of receptive language and cognition were administered pretreatment.

RESULTS

There was a negative relationship between auditory-perceptual measures of word accuracy and movement variability. Higher word accuracy was associated with lower jaw movement variability following intervention. There was a strong relationship between word accuracy and word duration at baseline, which became less robust posttreatment. Furthermore, baseline word accuracy was the only child-specific factor to predict response to DTTC treatment.

CONCLUSIONS

Following a period of motor-based intervention, children with CAS appeared to refine speech motor control in conjunction with improvements in word accuracy. Those who demonstrated the poorest performance at treatment onset displayed the greatest degree of gains. Taken together, these results reflect a system-wide change following motor-based intervention.

Dose frequency randomized controlled trial for Dynamic Temporal and Tactile Cueing (DTTC) treatment for childhood apraxia of speech: protocol paper

BACKGROUND

Childhood apraxia of speech (CAS) is a pediatric motor-based speech sound disorder that requires a specialized approach to intervention. The extant literature on the treatment of CAS commonly recommends intensive treatment using a motor-based approach, with some of the best evidence supporting the use of Dynamic Temporal and Tactile Cueing (DTTC). To date, a rigorous and systematic comparison of high and low dose frequency (i.e., frequency of therapy sessions) has not been undertaken for DTTC, resulting in a lack of evidence to guide decisions about the optimal treatment schedule for this intervention. The current study aims to fill this gap in knowledge by comparing treatment outcomes when dose frequency is varied.

METHODS

A randomized controlled trial will be conducted to examine the efficacy of low versus high dose frequency on DTTC treatment outcomes in children with CAS. A target of 60 children, 2;6-7;11 years of age, will be recruited to participate in this study. Treatment will be provided in the community setting by speech-language pathologists who have completed specialized training administering DTTC in a research reliable manner. True randomization with concealed allocation will be used to assign children to either the low or high dose frequency group. Treatment will be administered in 1-h sessions either 4 times per week over a 6-week period (high dose) or 2 times per week over a 12-week period (low dose). To measure treatment gains, probe data will be collected before treatment, during treatment, and 1 day, 1 week, 4 weeks, and 12 weeks post-treatment. Probe data will consist of customized treated words and a standard set of untreated words to assess generalization of treatment gains. The primary outcome variable will be whole word accuracy, encompassing segmental, phonotactic, and suprasegmental accuracy.

DISCUSSION

This will be the first randomized controlled trial to evaluate dose frequency for DTTC treatment in children with CAS.

TRIAL REGISTRATION

ClinicalTrials.gov identifier NCT05675306, January 6, 2023.

Attitudes and practices of specialty physicians regarding the return to school process after pediatric acquired brain injury

PURPOSE

More than 50,000 children are hospitalized yearly in the U.S. for acquired brain injury (ABI) with no established standards or protocols for school re-entry and limited resources for hospital-school communication. While ultimately the school has autonomy over curricula and services, specialty physicians were asked about their participation and perception of barriers in the school re-entry process.

METHODS

Approximately 545 specialty physicians were sent an electronic survey.

RESULTS

84 responses (43% neurologists and 37% physiatrists) were obtained with a response rate of ∼15%. Thirty-five percent reported that specialty clinicians currently make the plan for school re-entry. The biggest challenge for school re-entry noted by physicians was cognitive difficulties (63%). The biggest gaps perceived by physicians were a lack of hospital-school liaisons to help design and implement a school re-entry plan (27%), schools' inability to implement a school re-entry plan (26%), and an evidence-based cognitive rehab curriculum (26%). Forty-seven percent of physicians reported that they did not have adequate medical personnel to support school re-entry. The most commonly used outcome measure was family satisfaction. Ideal outcome measures included satisfaction (33%) and formal assessment of quality of life (26%).

CONCLUSION

These data suggest that specialty physicians identify a lack of school liaisons in the medical setting as an important gap in hospital-school communication. Satisfaction and formal assessment of quality of life are meaningful outcomes for this provider group.

Substrates of speech treatment-induced neuroplasticity in adults and children with motor speech disorders: A systematic scoping review of neuroimaging evidence

Purpose: Neuroimaging may provide clinical evidence for speech treatment-induced neuroplasticity. This review aimed to report the current scope of evidence relating to brain changes identified using neuroimaging techniques, following effective speech intervention in adults and children with motor speech disorders (MSD).Method: Studies were retrieved from five electronic databases (PubMed, CINAHL, EMBASE (Medline), SCOPUS, and Web of Science) and a general internet search.Result: Seven studies met the inclusion criteria. Using structural or functional neuroimaging techniques, five studies reported on the effects of the Lee Silverman Voice Treatment for dysarthria in adults and children, one study on the outcome of rhythmic-melodic voice training in adults with apraxia of speech, and one study on the effects of Prompts for Restructuring Oral Muscular Phonetic Targets therapy in children with idiopathic apraxia of speech. Identified brain changes included: enhanced white matter tract integrity; normalisation of baseline cortical activity; right-hemisphere shifts in re-organisation; perilesional activations; and cortical thinning.Conclusion: The current review identified preliminary evidence for treatment-dependent brain changes in adults and children with MSD. Although important to interpret within the context of Phase I research, the identification of therapeutic effects across seven heterogeneous studies suggests that treatment-induced improvements in speech performance are underpinned by demonstrable alterations in brain structure and/or function. Future research is required to better define these mechanisms of neuronal re-organisation in individuals receiving treatment for MSD, including their prognostic potential.

Speech and language deficits are central to SETBP1 haploinsufficiency disorder

Expressive communication impairment is associated with haploinsufficiency of SETBP1, as reported in small case series. Heterozygous pathogenic loss-of-function (LoF) variants in SETBP1 have also been identified in independent cohorts ascertained for childhood apraxia of speech (CAS), warranting further investigation of the roles of this gene in speech development. Thirty-one participants (12 males, aged 0; 8-23; 2 years, 28 with pathogenic SETBP1 LoF variants, 3 with 18q12.3 deletions) were assessed for speech, language and literacy abilities. Broader development was examined with standardised motor, social and daily life skills assessments. Gross and fine motor deficits (94%) and intellectual impairments (68%) were common. Protracted and aberrant speech development was consistently seen, regardless of motor or intellectual ability. We expand the linguistic phenotype associated with SETBP1 LoF syndrome (SETBP1 haploinsufficiency disorder), revealing a striking speech presentation that implicates both motor (CAS, dysarthria) and language (phonological errors) systems, with CAS (80%) being the most common diagnosis. In contrast to past reports, the understanding of language was rarely better preserved than language expression (29%). Language was typically low, to moderately impaired, with commensurate expression and comprehension ability. Children were sociable with a strong desire to communicate. Minimally verbal children (32%) augmented speech with sign language, gestures or digital devices. Overall, relative to general development, spoken language and literacy were poorer than social, daily living, motor and adaptive behaviour skills. Our findings show that poor communication is a central feature of SETBP1 haploinsufficiency disorder, confirming this gene as a strong candidate for speech and language disorders.

Childhood apraxia of speech evaluation in autism spectrum disorders: three clinical cases report

Introduction: Among the communication impairments found in subjects with Autism Spectrum Disorders (ASD), recently the literature has suggested a comorbid relationship with childhood apraxia of speech (CAS). The aim of the present study was to report the CAS assessment of 3 children diagnosed with ASD. Report: The subjects were three children aged 4 to 6 years, with a medical diagnosis of ASD. The language development assessment (LDA) was performed in the subjects, as well as the ABFW vocabulary evaluation and oral praxis (verbal, orofacial, a sequence of movements, and parallel movements) and evaluation of vocal, prosodic, and speech characteristics. All subjects had moderate language delay with better performance in the receptive area. Difficulties in oral praxis tasks were more evident in one of the subjects. Vocal, prosodic and speech features of all the cases were compatible with CAS. Conclusion: In the 3 cases reported, CAS signs were identified with impaired oral motor skills, prosody, and oral praxis, as well as inconsistent speech sound production.

Level of Vocabulary Development and Selected Elements Regarding Sensory Integration and Balance in 5-Year-Old Girls and Boys

The aim of this research was to assess relationships between the level of vocabulary and selected elements of sensory integration and balance in 5-year-old girls and boys, showing the differences between them. The study group consisted of 290 5-year-old children (172 boys and 118 girls) with different levels of vocabulary development and selected disturbances in sensory integration and balance processes. To evaluate the developmental deficits of speech with regard to vocabulary, the Children's Dictionary Test was used. The Clinical Test of Sensory Integration and Balance was also employed. In our research's overall assessment, 118 children, i.e., 41%, had a low level of vocabulary, while 108 (37%) had an average level and 64 (22%) had a high level. However, the average score of all examined children (3.71 stens) indicates a low level of vocabulary development. Less developed vocabulary skills included the ability to create subordinate words and define concepts. There were no significant differences in the level of vocabulary between girls and boys. We observed disorders concerning selected elements of sensory integration and balance in most of the children, and more often in boys. There were statistically significant relationships between the level of vocabulary and selected disorders of sensory integration and balance; however, they were not unambiguous. Children with the lowest level of vocabulary in overall assessment obtained significantly the worst results in the Clinical Test of Sensory Integration and Balance (CTSIB) open eyes, hard surface test. However, in the closed eyes, hard surface test, the lowest score was obtained by children with a high overall assessment. In turn, in the open eyes, soft surface test, the lowest score was noted for children with average overall assessment. In the complex CTSIB test, the lowest score was achieved by children with low ability to define concepts. The problem of the relationship between vocabulary level of and sensory integration as well as balance requires further research. The demonstrated significant relationships between some aspects of vocabulary level and selected elements of sensory integration as well as balance confirm the need to care for the overall psychomotor sphere of a child.

GATAD2B-associated neurodevelopmental disorder (GAND): clinical and molecular insights into a NuRD-related disorder

PURPOSE

Determination of genotypic/phenotypic features of GATAD2B-associated neurodevelopmental disorder (GAND).

METHODS

Fifty GAND subjects were evaluated to determine consistent genotypic/phenotypic features. Immunoprecipitation assays utilizing in vitro transcription-translation products were used to evaluate GATAD2B missense variants' ability to interact with binding partners within the nucleosome remodeling and deacetylase (NuRD) complex.

RESULTS

Subjects had clinical findings that included macrocephaly, hypotonia, intellectual disability, neonatal feeding issues, polyhydramnios, apraxia of speech, epilepsy, and bicuspid aortic valves. Forty-one novelGATAD2B variants were identified with multiple variant types (nonsense, truncating frameshift, splice-site variants, deletions, and missense). Seven subjects were identified with missense variants that localized within two conserved region domains (CR1 or CR2) of the GATAD2B protein. Immunoprecipitation assays revealed several of these missense variants disrupted GATAD2B interactions with its NuRD complex binding partners.

CONCLUSIONS

A consistent GAND phenotype was caused by a range of genetic variants in GATAD2B that include loss-of-function and missense subtypes. Missense variants were present in conserved region domains that disrupted assembly of NuRD complex proteins. GAND's clinical phenotype had substantial clinical overlap with other disorders associated with the NuRD complex that involve CHD3 and CHD4, with clinical features of hypotonia, intellectual disability, cardiac defects, childhood apraxia of speech, and macrocephaly.