A case of mild partial androgen insensitivity syndrome in a juvenile boy

Androgen insensitivity syndrome (AIS) is a rare disorder with X-linked recessive inheritance in 46 XY patients. The clinical manifestations vary between patients, especially regarding external genitalia development. Herein, the case of AIS in a 13-year-old male, who was born with hypospadias and presented to the hospital with gynaecomastia that had developed from 8 years of age, is reported. No micropenis, cryptorchidism or bifid scrotum were found. Testis volume was 12 ml on both sides. His testosterone and luteinizing hormone levels were normal compared with sex- and age-adjusted reference range. His bone age was approximately 13 years according to Greulich-Pyle assessment. Sequence analysis of the androgen receptor (AR) gene revealed a mutation (c.2041A>G) in exon 4, a novel mutation site in the AR gene. Prediction analysis suggested this to be a disease-causing variant. A milder clinical presentation and normal hormone levels in cases of partial AIS might differ from the usually reported signs and symptoms. A diagnosis of AIS should not be ignored in teenage patients who present with gynaecomastia and hypospadias, but normal hormone levels.

Sex assignment and psychosexual peculiarities of individuals with different forms of androgen insensitivity syndrome: A qualitative study

Background

A mismatch between chromosomal, gonadal, and phenotypic sexes in individuals with androgen insensitivity syndrome (AIS) creates problems in sex assignment and psychosexual identification.

Objective

To identify psychosexual and sex assignment peculiarities of individuals with different forms of AIS.

Materials and Methods

In this qualitative study, 41 individuals with AIS aged between 15 and 31 yr who referred to the Universe Center for Reproductive Medicine Tbilisi, Georgia between 2016 and 2021 were studied. All individuals underwent clinical, genealogical, hormonal, ultrasonographic, and cytogenetic examinations. In-depth interviews and medical records assessed psychosexual profiles and sex assignment histories.

Results

32 cases were diagnosed with the complete form of AIS (CAIS), 8 individuals with the partial form (PAIS), and one with a mild form (MAIS). Individuals with CAIS and PAIS were assessed at birth and raised as girls. Individuals with CAIS and female psychosexual disposition were referred to us due to amenorrhea. Adolescent individuals with PAIS assessed as girls referred to us due to masculinization detected in puberty. An individual with MAIS was assessed at birth and raised as a boy with male genitalia. All individuals with AIS had typical hormonal data and sex chromosome complex for men. 20 sexually active individuals with CAIS had penile-vaginal contact with the man. None of the individuals with CAIS and PAIS thought about gender reassignment after being diagnosed, only the individual with MAIS aimed for male-to-female transition.

Conclusion

Psychosexual identification remains a significant challenge in AIS management. Detection of female psychosexual disposition in one participant that is unusual to MAIS may be associated with somatic mosaicism of the androgen receptor gene.

Characterization of a novel androgen receptor gene variant identified in an Iranian family with complete androgen insensitivity syndrome (CAIS): a molecular dynamics simulation study

Androgen insensitivity syndrome (AIS) is a common form of 46, XY disorder in sex development disease (DSD). It is due to the androgen receptor (AR) gene mutations and includes clinical subgroups of complete AIS (CAIS) and partial AIS (PAIS), along with a vast area of clinical heterogeneity of completely normal female external genitalia to male infertility. In this study, the Whole Exome Sequencing (WES) was utilized to detect the cause of DSD in a consanguineous Iranian family with two female patients with normal external genitalia and 46, XY karyotype. Sanger sequencing was applied to validate the candidate variant. Next, we predicted the structural alteration induced by the variant on AR protein using bioinformatics analysis such as molecular dynamic (MD) and molecular docking simulations. WES results identified a novel hemizygous p.L763V variant in the AR gene in the proband that was compatible with the X-linked recessive pattern of inheritance. Bioinformatics studies confirmed the loss of AR function. Based on the American College of Medical Genetics and Genomics (ACMG) guidelines, it was categorized as pathogenic. This study broadens the AR mutation spectrum and introduces the novel p.L763V missense pathogenic variant leading to AR failure to bind to its ligand, and the resulting CAIS clinical subgroup. This study presents a prosperous application of WES and bioinformatics analysis to recognize the underlying cause of DSD in Iran, necessary for its clinical/psychological management.Communicated by Ramaswamy H. Sarma.

Androgen insensitivity syndrome: a review

PURPOSE

Androgen insensitivity syndrome (AIS) is a disorder characterized by peripheral androgen resistance due to androgen receptor mutations in subjects with 46 XY karyotype. The severity of hormone resistance (complete, partial or mild) determines the wide spectrum of phenotypes.

METHODS

We performed a literature review on Pubmed focusing on etiopathogenesis, molecular alterations, and diagnostic-therapeutic management.

RESULTS

AIS is determined by a large variety of X-linked mutations that account for the wide phenotypic spectrum of subjects; it represents one of the most frequent disorders of sexual development (DSD). Clinical suspicion can arise at birth in partial AIS, due to the presence of variable degrees of ambiguity of the external genitalia, and at pubertal age in complete AIS, due to the development of female secondary sex characteristics, primary amenorrhea, and absence of female primary sex characteristics (uterus and ovaries). Laboratory tests showing elevated LH and testosterone levels despite mild or absent virilization may be helpful, but diagnosis can be achieved only after genetic testing (karyotype examination and androgen receptor sequencing). The clinical phenotype and especially the decision on sex assignment of the patient, if the diagnosis is made at birth or in the neonatal period, will guide the following medical, surgical and psychological management.

CONCLUSIONS

For the management of AIS, a multidisciplinary team consisting of physicians, surgeons, and psychologists is highly recommended to support the patient and his/her family on gender identity choices and subsequent appropriate therapeutic decisions.

Clinical outcomes and genotype-phenotype correlations in patients with complete and partial androgen insensitivity syndromes

PURPOSE

Androgen insensitivity syndrome (AIS) is a rare X-linked recessive disorder caused by unresponsiveness to androgens because of mutations in the AR gene. Here, we investigated the clinical outcomes and molecular spectrum of AR variants in patients with AIS attending a single academic center.

METHODS

This study included 19 patients with AIS who were confirmed by molecular analysis of AR. Clinical features and endocrinological findings were retrospectively collected, including presenting features, external genitalia, sex of rearing, timing of gonadectomy, pubertal outcomes, and sex hormone levels. Molecular analysis of AR was performed using Sanger, targeted gene panel, or whole-exome sequencing.

RESULTS

Among all 19 patients, 14 (74%) were classified as having complete AIS (CAIS), whereas 5 (26%) had partial AIS (PAIS). All patients with CAIS, and 3 patients with PAIS were reared as female. One patient with CAIS manifested a mixed germ cell tumor at the age of 30 years. Molecular analysis of AR identified 19 sequence variants; 12 (63%) were previously reported, and the remaining 7 (37%) were novel. Missense mutations were the most common type (12 of 19, 63%), followed by small deletions, nonsense mutations, an insertion, and a splice site mutation.

CONCLUSION

Here, we describe the clinical outcomes and molecular characteristics of 19 Korean patients with AIS. Patients with PAIS manifested various degrees of masculinization of the external genitalia. Nonsense and frameshift mutations were frequent in patients with CAIS, whereas patients with PAIS harbored exclusively missense mutations.

A prime editor efficiently repaired human induced pluripotent stem cells with AR gene mutation (c.2710G > A; p. V904M)

Prime Editor (PE) is a precise genome manipulation technology based on the CRISPR-Cas9 system, while its application in human induced pluripotent stem cells (iPSCs) remains limited. Here, we established a repaired hiPS cell line (SKLRMi001-A-1) from hiPSCs with androgen receptor (AR) mutation (c.2710G > A; p.V904M). The repaired iPSC line expressed pluripotency markers, retained normal karyotype, showed the capability of differentiating into three germ layers and was absence of mycoplasma infection. The repaired iPSC line will help to elucidate the mechanism of androgen insensitivity syndrome (AIS) and benefit treatment for AIS in the future.

Novel pathogenic variants in the androgen receptor gene associated with androgen insensitivity syndrome identified through exome sequencing and in silico analysis

Androgen insensitivity syndrome (AIS) is a common disorder/differences of sex development with a 46, XY karyotype, but diverse genital phenotypes. Various pathogenic variants within the androgen receptor (AR) gene on the X chromosome are the primary pathogenesis of AIS. However, some patients with AIS still lack a definitive molecular diagnosis. Here, molecular diagnosis of eight patients with the clinical phenotype of AIS was performed using exome sequencing. We found eight variants of the AR gene, including p.(C131*), p.(W435*), p.(T653Lfs*8), c.2318+1G>T, p.(S397R), p.(Y572C), p.(S648G), and p.(D691G), and a pathogenic copy number variation covering a deletion of exon 2 of AR gene. Patient pedigree validation confirmed that the discovered variants conformed to the X-linked recessive inheritance patterns of AIS. In silico analysis indicated that the splice site variant (c.2318+1G>T) could lead to loss of the original 5' splice donor site and exon skipping. Missense variants, including p.(S397R), p.(S648G), and p.(D691G), may affect the structure and function of the AR protein. Our results highlight the applicability of exome sequencing for molecular diagnosis of AIS. The novel variants found in this study enrich the pathogenic variant spectrum of the AR gene and provide a basis for the diagnosis and management of patients with AIS. A definite molecular diagnosis will provide accurate guidance for genetic counseling of proband's family members.

Pubertal and Gonadal Outcomes in 46,XY Individuals with Partial Androgen Insensitivity Syndrome Raised as Girls

INTRODUCTION

Although it was common in the 1970s-1990s to assign female gender of rearing to 46,XY infants with limited virilization of varying etiologies, including those with partial androgen insensitivity syndrome (PAIS), long-term data on outcomes for these individuals are sparse. Therefore, our goal was to use the power of an international registry to evaluate clinical features, surgical management, and pubertal data in patients with a molecularly confirmed diagnosis of PAIS who were born before 2008 and were raised as girls.

METHODS

The current study interrogated the International Disorders of Sex Development Registry for available data on management and pubertal outcomes in individuals with genetically confirmed PAIS who were raised as girls.

RESULTS

Among the 11 individuals who fulfilled the key criteria for inclusion, the external masculinization score (EMS) at presentation ranged from 2 to 6 (median 5); 7 girls underwent gonadectomy before the age of 9 years, whereas 4 underwent gonadectomy in the teenage years (≥ age 13). Clitoral enlargement at puberty was reported for 3 girls (27%) who presented initially at the time of puberty with intact gonads. In the 9 individuals (82%) for whom gonadal pathology data were provided, there was no evidence of germ cell tumor at median age of 8.1 years. All girls received estrogen replacement, and 8/11 had attained Tanner stage 4-5 breast development at the last assessment.

CONCLUSION

In general, although it appears that female assignment in PAIS is becoming uncommon, our data provide no evidence to support the practice of prophylactic prepubertal gonadectomy with respect to the risk of a germ cell tumor.

Gender Incongruity in a Person with 46,XY and Complete Androgen Insensitivity Syndrome Raised as a Female

We present the case of a patient with female sex assignment at birth whose parents consulted with a pediatrician when the child was 12 years old, indicating that despite female sex assignment, she felt that she (henceforth "he") had a male gender identity and was gynephilic. Medical examination revealed a 46XY karyotype, a primary amenorrhea and an appropriate testosterone increase after HCG stimulation test. The patient was diagnosed then with a 46,XY disorder of sex development with androgen insensitivity syndrome, but then he missed subsequent appointments. At the age of 24, he resumed medical follow-up to reaffirm his male gender identity through sex reassignment surgery. His physical examination showed a Tanner stage III-IV breast development, vulva, clitoris, normal-sized vagina, absence of uterus and ovaries on transvaginal ultrasound, bilateral cryptorchidism on abdominal-pelvic MRI and osteoporosis on bone densitometry. The results of the blood tests were LH 24.5 mIU/mL [normal range, 1.7-8.6 mIU/mL for men] and testosterone 8.8 nmol/L [8.7-33 nmol/L]; conversely, FSH, estradiol, progesterone, and prolactin levels were normal. The molecular genetic analysis revealed an androgen receptor gene mutation associated with complete androgen insensitivity syndrome. At present, the patient has undergone bilateral orchiectomy and has initiated treatment with topical testosterone and bisphosphonates. We have yet to evaluate the effects and decide the best therapy taking into account that he has a male gender identity but complete androgen insensitivity syndrome.

Case Report: a Novel Nonsense Mutation in the Androgen Receptor Gene Causing the Complete Androgen Insensitivity Syndrome

Androgen insensitivity syndrome (AIS) is a rare X-linked genetic disorder caused by mutations in the androgen receptor (AR) gene. AIS can be divided into partial type (PAIS), mild type (MAIS), and complete type (CAIS) based on the degree of androgen insensitivity. CAIS is characterized by a male genotype and a complete female phenotype. A 10-year-old child presented with a bilateral inguinal mass for 9 years. Physical examination revealed a complete feminine genital appearance and a painless mass in bilateral inguinal area. Pelvic magnetic resonance imaging (MRI) revealed long T1 and T2 elliptic signal nodules in bilateral inguinal area, absence of uterus-ovary signal and a short blind end of the vagina. Chromosomal analyzes manifested a 46, XY karyotype. By analyzing the above clinical data, the preliminary diagnosis of CAIS was confirmed. Then laparoscopic bilateral gonadectomy was performed. The histological examination of resected gonad showed it consisted of dysplastic testicular tissue and no signs of malignancy were observed. Sanger sequencing revealed the presence of a hemizygous mutation c.927 T > G (p. Tyr309*) in exon 1 of the AR gene. This is the first report of a novel nonsense mutation.

Complete androgen insensitivity syndrome caused by the c.2678C>T mutation in the androgen receptor gene: A case report

BACKGROUND

Androgen insensitivity syndrome is an X-linked recessive genetic disease caused by mutations in the androgen receptor gene (AR). However, the underlying molecular mechanisms for the majority of AR variants remain unclear. In this study, we identified a point variant in three patients with complete androgen insensitivity syndrome (CAIS), summarized the correlation analysis, and performed a literature review.

CASE SUMMARY

The proband was raised as a girl. In infancy, she was first referred to hospital with a right inguinal hernia. Ultrasonography revealed the absence of a uterus and ovaries, and a testis-like structure located at the inguinal canal. Further diagnostic workup detected a 46, XY karyotype, and fluorescence in situ hybridization analysis showed the presence of the SRY gene. Histological analysis revealed the excised tissue to be testicular. Twelve years later, she was admitted to our hospital with a lack of breast development. Her pubic hair and breasts were Tanner stage I. She had normal female external genitalia. Blood hormone tests showed normal testosterone levels, low estradiol levels, and high gonadotropin levels. Her two siblings underwent similar examinations, and all three had a rare hemizygous missense mutation in AR: c.2678C>T. In vitro functional analyses revealed decreased nuclear translocation in AR-c.2678C>T mutation cells.

CONCLUSION

This case of CAIS was caused by an AR variant (c.2678C>T). Functional studies showed impaired nuclear translocation ability of the mutant protein.

Ultrasound of retained gonads in children and young women with androgen insensitivity syndrome

INTRODUCTION

Gonadal management in androgen insensitivity syndrome (AIS) patients has been controversial due to low risk of testicular cancer. Our study evaluated the role of ultrasound (US) in screening for malignancy in retained gonads in AIS patients.

METHODS

This was a retrospective study (2001-2020) of gonadal US in patients with AIS. Demographics and clinical information were retrieved from the medical records. US studies were reviewed for nodule presence, size, echotexture, and change on follow-up studies. When available, pathology correlation was performed. Two-tailed t-test was used to compare age and development of nodules clinically or on US examination.

RESULTS

13 patients were included with a median age was 9.9 years (range 3.8-18.4 years). In 11 patients, gonads were in the inguinal canals on either initial or follow-up US. No nodules were palpable on physical examination, but nodules were detected in ten testicles by US in five of 13 patients (41.7%). Presence of nodules was significantly (p = 0.0038) associated with older age. The largest nodule size varied from 0.4 to 2.2 cm (average 0.9 ± 0.5 cm) and most (7/10, 70%) were hypoechoic. Finding testicular nodules on US led to change in management in three patients; bilateral gonadectomies, unilateral gonadectomy, and gonadal excisional biopsies (Figure). Pathology demonstrated Sertoli hamartoma in these patients, and in an additional two patients who underwent post-puberty gonadectomy. No malignancy was found in any specimen.

DISCUSSION

Preservation of the gonads in children with AIS is associated with low risk for malignant transformation. The role of US surveillance of the gonads is unknown. In our series on 13 patients, most of the visualized 24 gonads (22/24, 91.7%) were localized in the groins in either the first or follow-up US studies. Nodules were detected in ten gonads in five of 13 patients (41.7%). Most of these gonads (8/10) had numerous nodules, most (7/10) were hypoechoic with average diameter of the largest nodule of 0.9 ± 0.5 cm. Pathology in 5 patients demonstrated Sertoli hamartomas in all of the gonads. No malignancy was found. In our series, gonadal nodules led to either gonadectomies or excisional biopsies in three patients. Our study has several limitations, related to the retrospective nature of the study and the small size of our series.

CONCLUSION

Multiple testicular nodules were commonly detected by US in AIS patients and were not associated with malignancy. Therefore, we are concerned that US screening can lead to unnecessary excisional biopsies and orchiectomies.

Clinical, Hormonal, Genetic, and Molecular Characteristics in Androgen Insensitivity Syndrome in an Asian Indian Cohort from a Single Centre in Western India

The study aimed to analyze clinical and hormonal phenotype,and genotype in patients with genetically proven androgen insensitivity syndrome (AIS) from Western India. Index patients with pathogenic variants in the androgen receptor (AR) gene were identified from a consecutive 46,XY DSD cohort (n = 150) evaluated with clinical exome sequencing, and their genetically-proven affected relatives were also included. In sum, 15 index cases (9 complete AIS [CAIS] and 6 partial AIS [PAIS]) were identified making AIS the second most common (10%) cause of 46,XY DSD, next to 5α-reductase 2 deficiency (n = 26; 17.3%). Most patients presented late in the postpubertal period with primary amenorrhoea in CAIS (89%) and atypical genitalia with gynecomastia in PAIS (71.4%). All CAIS were reared as females and 83.3% of PAIS as males with no gender dysphoria. Four of 6 patients with available testosterone to dihydrotestosterone ratio had a false elevation (>10). Metastatic dysgerminoma was seen in 1 patient in CAIS, while none in the PAIS group had malignancy. Fifteen different (including 6 novel) pathogenic/likely pathogenic variants in AR were found. Nonsense and frameshift variants exclusively led to CAIS phenotype, whereas missense variants led to variable phenotypes. In this largest, monocentric study from the Asian Indian subcontinent, AIS was the second most common cause of 46,XY DSD with similar phenotype but later presentation when compared to cases in the rest of the world. The study reports 6 novel pathogenic variants in AR.

Complete androgen insensitivity syndrome in a 13-year-old Lebanese child, reared as female, with bilateral inguinal hernia: a case report

Background

Androgen insensitivity syndrome is a rare X-linked disorder of sex development, caused by mutations in the androgen receptor. In this case, a 13-year-old child, reared as female, presenting for primary amenorrhea, was diagnosed with complete androgen insensitivity syndrome.

Case presentation

A 13-year-old Caucasian child, reared as female, presents with primary amenorrhea. Physical examination revealed female appearance and a short vagina with blind-ended pouch. Laboratory examination showed high levels of testosterone and anti-Müllerian hormone; uterus and ovaries were absent. Karyotype confirmed a 46,XY pattern. Deoxyribonucleic acid analysis of the androgen receptor gene revealed a homozygous mutation p.R856C in exon 7. Gender was assigned as female, and she was started on hormonal therapy and underwent gonadectomy.

Conclusion

Androgen insensitivity syndrome comprises a large spectrum of presentations. High index of suspicion is needed. Investigation of girls with bilateral inguinal hernia is critical.

In vitro functional characterization of androgen receptor gene mutations at arginine p.856 of the ligand-binding-domain associated with androgen insensitivity syndrome

Androgens are critical for male sex differentiation. Their actions are mediated by the androgen receptor (AR). Mutations disrupting AR function result in the androgen insensitivity syndrome (AIS). In this study, we identified in a patient with complete AIS, a novel AR mutation p.R856L. To investigate the functional properties of p.R856L, we performed functional studies. In comparison, we have characterized two already described mutations: p.R856H and p.R856C. We used a model composed of two different promoters fused to a reporter gene, two cell lines, and showed that all mutations were able to transactivate the (ARE)₂-TATA promoter expressed in CHO cells more highly. Moreover, we confirmed the pathogenicity of the p.R856L and p.R856C mutations, and their associations with complete AIS. In contrast, the p.R856H mutation, which is associated with a spectrum of AIS phenotypes, showed less severe transcriptional constraints. Altogether, our studies allowed us to better characterize arginine residue at p.R856 position.

Participant- and Clinician-Reported Long-Term Outcomes After Surgery in Individuals with Complete Androgen Insensitivity Syndrome

STUDY OBJECTIVE

To evaluate the outcomes of genital surgery through participant's and observer's satisfaction with the anatomical and functional result.

DESIGN AND SETTING

Multicenter cross-sectional study in 14 clinics in 6 European countries in 2014-2015.

PARTICIPANTS

Seventy-one individuals with complete androgen insensitivity syndrome (≥16 years old).

INTERVENTIONS

Data from clinical report files, an optional gynecological examination, patient-reported outcomes on received surgical interventions, satisfaction with appearance and function after surgery, and effect of the surgical procedure on life.

MAIN OUTCOME MEASURES

Outcomes were calculated per different surgical treatments. Linear regression models were used for associations with vaginal satisfaction.

RESULTS

Sixty-three participants had received surgery: 62 gonadectomies, 12 vaginal surgeries with or without vaginal dilations, 9 vaginal dilations only, and 2 breast enlargements. More than half of the participants took part in the gynecological examination. Vaginal length was similar in those without (60 mm) and with (67 mm) vaginoplasty and/or vaginal dilations. Participant- and observer-reported appearance of the genitals were generally satisfactory to good. Sexual complaints (pain or bleeding during/after intercourse) were common. Vaginal satisfaction was strongly associated with satisfaction with sex life in general, whereas vaginal interventions and number of surgeries were not. Many participants reported a negative effect of gonadectomy on their life.

CONCLUSION

Despite good genital appearance, functional problems are commonly reported, across the different nonsurgical and surgical regimens. Patient-reported outcomes should be evaluated before and after surgical procedures. Because of the negative effect on life and the low risk of malignancy, gonadectomy should be deferred to adulthood with regular follow-up.

Adolescent Gynecomastia due to Minimal Androgen Resistance Syndrome: A Case Report and Literature Review

A 14-year-old boy with a 46,XY karyotype and persistent breast-3-stage gynecomastia is reported. The reproductive axis was investigated by standard laboratory methods and the androgen receptor (AR) gene was sequenced. Also, a literature review of phenotypes associated with the AR genetic variant p.Pro392Ser was performed. The boy presented with height in the upper normal range (+1.9 SDS) and normal body mass index (-0,3 SDS); pubertal development was PH5/G4 (mean testicular volume 15 mL; 0 SDS). Laboratory findings were normal for age and sex, except aromatization index (0.09; reference range 0.03-0.07). Analysis of the AR gene showed the single nucleotide variant c.1174C>T (p.Pro392Ser) in exon 1, leading to the diagnosis of minimal androgen insensitivity syndrome (AIS). This genetic variant is reported in other 8 patients with AIS and is associated with variable clinical phenotypes ranging from complete to partial and minimal AIS. To the best of our knowledge, this is the first adolescent in whom the p.Pro392Ser mutation is associated with isolated persistent gynecomastia. The underlying reason of phenotypic variability due to this AR mutation remains unknown. Persistent gynecomastia due to minimal AIS has been reported in few additional males with variable AR mutations. Since fertility troubles may occur in adult men with minimal AIS, early diagnosis can allow optimizing the clinical management.

Laparoscopic Repositioning of Gonads from the Labia Majora or Inguinal Canal into the Abdominal Cavity in Pediatric Complete Androgen Insensitivity Syndrome Patients with Inguinal Hernia

Androgen insensitivity syndrome (AIS) is a congenital condition characterized by a 46,XY karyotype but with a female phenotype caused by mutations in the androgen receptor gene located on the X chromosome. In patients with complete AIS (CAIS), preservation of the gonad is recommended until puberty, and gonadectomy can be regarded subsequently. The location of the gonads should be considered, because positions in the labia majora or inguinal canals can cause discomfort. Here, the laparoscopic reposition of gonads into the abdominal cavity in pediatric patients with CAIS is reported. From 2013 to 2019, laparoscopic inguinal hernia repair was performed in 2,061 pediatric patients with inguinal hernias aged <10 years and with female external genitalia. Among them, 11 had CAIS. Gonads located in the labia majora or inguinal canal were repositioned into the abdominal cavity. The mean age was 18.9 months (range 1-110 months). The gonads were located in the inguinal canal in 7 patients, in the labia majora in 3, and in the abdominal cavity in 1. Laparoscopic repositioning of such gonads into the abdominal cavity is feasible in pediatric patients with an inguinal hernia and CAIS.

Complete androgen insensitivity syndrome and risk of gonadal malignancy: systematic review

Complete androgen insensitivity syndrome (CAIS) is a rare condition characterized by 46,XY karyotype, female external genitalia, absence of uterus, and testes located intra-abdominally, in the inguinal ring or in the labia majora. In the present study, the frequency of testicular malignancy in prepubertal and pubertal patients with CAIS who underwent gonadectomy or gonadal biopsy were evaluated. Systematic review was performed using electronic databases according to the PRISMA-P (Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols) guidelines. The samples included 15 articles published between 1998 and 2019. From a total of 456 patients who underwent gonadectomy or gonadal biopsy, 6.14% had a premalignant lesion and most were postpubertal (82.14%). A malignant lesion was found in 1.3% and all were postpubertal. Because the risk of malignancy is very low in prepubertal patients with CAIS, gonadectomy may be delayed until puberty is complete, allowing it to progress naturally; however, close follow-up of the patient is required.

Clinical, Etiological and Laboratory Profile of Children with Disorders of Sexual Development (DSD)-Experience from a Tertiary Pediatric Endocrine Unit in Western India

OBJECTIVES

To present the clinical profile, diagnostic work-up, and management of children with Disorders of Sexual Development (DSD).

MATERIALS AND METHODS

A retrospective study from a tertiary pediatric endocrine unit of western India. We included 39 patients who presented over a period of 9 years from June 2009 to June 2018.

RESULTS

Nineteen patients (48.7%) were diagnosed with 46 XY DSD, 16 (41%) with 46 XX DSD, and 4 (10.3%) with sex chromosomal DSD. Out of 46 XY DSD, androgen insensitivity was observed in 8 (42.1%) patients, 5 alpha-reductase deficiency in 5 (26.3%), gonadal dysgenesis in 3 (15.8%), ovotesticular DSD in 2 (10.5%) and 17 beta-hydroxylase (17γ-HSD3) deficiency in 1 (5.3%). Congenital adrenal hyperplasia was the most common cause in 46 XX DSD observed in 11 (68.75%) out of 16 patients, ovotesticular DSD was seen in 4 (25%) patients and testicular DSD in 1 (6.25%) patient. In sex chromosomal DSD 3 (75%) patients had mixed gonadal dysgenesis and 1 (25%) had ovotesticular DSD out of a total of 4 patients. At presentation gender of rearing was assigned as male in 16 (41%) patients, female in 20 (51.3%) patients, and no gender was assigned in 3 (7.7%). The gender of rearing was changed after diagnosis in 6 (16.7%) children.

CONCLUSION

CAH was the most common etiology of 46 XX DSD whereas androgen insensitivity among 46 XY DSD. Assigning the sex of rearing should not be hurried and should be done only after diagnosis and parental counseling. A multidisciplinary and systematic approach is required for children with DSD.

Individualized care for patients with intersex (disorders/differences of sex development): Part 3

The focus of this article is to review the complex determinants of gender assignment in a child with a disorder of sex development using four different clinical cases. While the care of patients with DSD may be shared across several specialties and opinions regarding their management may vary, this may be further complicated by psychosocial, cultural and economic factors. In this regard, access to behavioral health specialists with experience and specialization in the treatment of patients with DSD should be a foundational component of the standard of care and can greatly assist in the complex decision-making regarding gender assignment. We recommend an individualized approach by a multidisciplinary team utilizing a range of evolving strategies, including outcome data (or lack thereof) to support families during the decision-making process.

Inguinal hernia in girls: A retrospective analysis of over 1000 patients

BACKGROUND

In girls with inguinal hernia, timing of surgical repair to prevent ovarian strangulation and screening for Androgen Insensitivity Syndrome (AIS) remain controversial. This study assesses the incidence of ovarian strangulation and AIS, and its associated risk factors.

METHODS

Electronic patient records were used to study girls aged 0-15 years who underwent inguinal hernia repair between 2000 and 2017. Patients with incomplete data were excluded. Risk factors were identified using logistic regression.

RESULTS

This study includes 1084 girls (median (IQR) age: 133.5 (14-281) weeks) who underwent 1132 hernia repairs (1015 unilateral, 117 bilateral) within a median (IQR) time interval of 12 (6-23) days following diagnosis. Hernia sac intraoperatively contained ovary in 235 (21.7%) patients, ovary was strangulated in 14 (6%). Risk factors for ovarian strangulation were younger gestational age (OR 0.49), higher birthweight (OR 32.18), and first presentation at the emergency department (OR 13.07). However data were partly missing. Ectopic testis was found in seven (0.6%) patients. Metachronous contralateral inguinal hernia and ipsilateral recurrence developed in 6.1% and 0.3%, respectively.

CONCLUSIONS

Ovarian hernia was diagnosed in 21.7%, and ovary was strangulated in 6%. No definite conclusions can be drawn regarding risk factors for strangulation and timing of surgery in girls with irreducible ovarian hernia.

LEVEL OF EVIDENCE

Level III.

Congenital uterovaginal abnormalities, it's embryogenesis, surgical management and clinical implications

Objective

Congenital Mullerian duct malformations are a challenging group of conditions for surgeons and need surgical experience and skill. Accordingly, the aim of this study is to present the diagnosis, surgical management, and clinical implications of congenital uterovaginal abnormalities.

Methods

Between 1980 and 2015, 8 patients with congenital uterovaginal abnormalities were diagnosed. In one patient a unique case of an unusual horseshoe shaped double uterus communicating via a transverse canal along with agenesis of the cervix and vagina was noted, and utero-vaginal agenesis was diagnosed in 6 patients. Complete androgen insensitivity syndrome with its female phenotype associated with bilateral testicular tissue in the inguinal canal with an accompanying absence of the ovaries, uterus, uterine tubes, vagina, and an imperforate hymen, was diagnosed in one patient. Clinical examination of all the patients revealed well-developed secondary sexual characteristics. A modified McIndoe vaginoplasty procedure was the surgical treatment common to all patients to treat vaginal agenesis. The surgery was performed by a consultant (Dr. K.G. Paul) using the standardized surgical technique.

Results

An unusual Mullerian duct anomaly, uterus bicornisacollis, was successfully corrected by uteroplasty and a new cervix was constructed. Complete vaginal agenesis was corrected by a modified McIndoe vaginoplasty technique. None of the patients had any significant post-operative complications.

Conclusion

Knowledge of congenital uterovaginal abnormalities diagnosed in this study is essential for surgeons, clinical anatomists, radiologists, and morphologists who may increase the success of their diagnostic evaluations and surgical approaches to the region.

Six molecular patterns leading to hemophilia A phenotype in 18 females from Poland

INTRODUCTION

Female hemophilia is an intriguing rare disorder and few larger reports on its genetic etiology are available. While historically the diagnosis was satisfactorily reached by factor VIII activity assays, the clinical and potentially therapeutic heterogeneity of female hemophilia calls for comprehensive molecular diagnosis in each case. Currently, the genetic investigations are not a part of routine, state-funded, diagnostics in Poland, and thus molecular epidemiological data are missing.

AIM

We set out to perform a comprehensive genetic analysis of Polish females with hemophilia A.

PATIENTS/METHODS

Eighteen females with hemophilia A (including 2 with severe and 5 with moderate hemophilia phenotype) consented for genetic diagnostics. To establish F8 mutations, we used next-generation sequencing of a panel of genes associated with hematological disorders, standard assays for recurrent intragenic F8 inversions and MLPA when deletions were suspected. When appropriate we also used karyotyping, genomic microarrays and X chromosome inactivation assays.

RESULTS

While abnormally skewed X-chromosome inactivation combined with a F8 variant on the active allele was, as expected, the most common genetic etiology, a number of other genetic scenarios were unraveled. This included: misdiagnosis (molecular diagnosis of vWd), Turner syndrome, compound heterozygosity and androgen insensitivity syndrome (a phenotypical 46,XY female with a novel androgen receptor gene mutation). We report 3 novel F8 mutations.

CONCLUSION

Every case of female hemophilia warrants full genomic diagnostics, as this may change the diagnosis or reveal broader morbidity than a coagulation disorder (Turner syndrome, androgen insensitivity, or cardiovascular morbidity that we described previously in a SHAM syndrome carrier).

A hemizygous mutation in the androgen receptor gene causes different phenotypes of androgen insensitivity syndrome in two siblings by disrupting the nuclear translocation

The androgen insensitivity syndrome (AIS) is a congenital disease characterized by androgen resistance due to androgen receptor (AR) gene mutations, resulting in disorders of sex differentiation in 46,XY individuals. However, the underlying mechanisms in the majority of AR variants and the phenotype-genotype correlations are unclear. Here, we identified a p.Y764H variant of the AR gene that results in different phenotypes in a family. Structural analyses revealed that amino acid substitution affected protein properties and spatial conformation, and in vitro, functional studies showed impaired nuclear translocation ability of the mutated protein. Moreover, the extent to which this variant reduced nuclear translocation depends on the dihydrotestosterone (DHT) concentrations. Our results, for the first time, demonstrated a pathogenesis of the p.Y764H mutations in AR resulting in AIS phenotype, and indicated that AIS patients with p.Y764H mutation and preserved gonad might have residual AR activity at high androgen levels, putting patients at risk for pubertal virilization in the future. We provide an in-depth insight into the pathogenesis in AIS based on the amino acid substitution, which may help aid its precise diagnosis, personalized treatment, and organized follow-up to avoid gender dysphoria.

Six novel Mutation analysis of the androgen receptor gene in 17 Chinese patients with androgen insensitivity syndrome

BACKGROUND

Androgen insensitivity syndrome (AIS) is the most common type of 46, XY disorders of sex development (DSD), with a wide range of clinical heterogeneity, from male infertility, hypospadias to completely normal female external genitalia. Mutation of the androgen receptor (AR) gene on the X chromosome (Xq11.2q12) is the main cause of AIS.

METHODS

By phenotype evaluation, hormone test, ultrasound scan and G-banding karyotype, 17 unrelated Chinese patients were clinical diagnosed with AIS. Sanger sequencing of the AR was performed in these 17 patients. Functional studies were carried out for the novel mutations.

RESULTS

We identified 16 mutations in all patients, including six novel mutations (Q59*, F171Sfs*4, E204*, G209E, I870T, *921R). It is the first time that a stop codon mutation (*921R) in AR has been identified. Expression and nuclear localization analysis showed the *921R mutation caused an elongated abnormal polypeptide chain of the AR protein, and the abnormal protein could not be transported to the nucleus to stimulate the expression of downstream genes after androgenic treatment. Expression analysis showed the protein level of G209E mutation was obviously decreased.

CONCLUSION

Our study expands the spectrum of AR mutations and could provide evidence for the genetic and reproductive counseling of families with AIS. All of these findings broadened the mutation spectrum of AR, which were significantly valuable for patient gender assignment, genetic counseling and the clinical and psychological management.

A Management Protocol for Gonad Preservation in Patients with Androgen Insensitivity Syndrome

Historically, individuals with androgen insensitivity syndrome (AIS) were managed with removal of gonadal tissue at various ages to avert the risk of gonadal malignancy. Recently, clinical practice changed, with gonadectomy being postponed until late adolescence. Adolescents and adults with complete AIS have questioned this approach. Additionally, testicular germ cell tumors are increasingly believed to be quite rare with rates as low as 0% in molecularly confirmed individuals with AIS. Gonadectomy deprives patients of the benefits of their endogenous hormones and potential fertility. Furthermore, human rights organizations advocate for deferring irreversible surgery in conditions known as differences of sex development, which includes AIS, to allow patient autonomy in decision-making. Recent literature supports an approach that uses risk stratification to manage gonads in AIS. Herein we review what is known about malignancy risk in the different subtypes of AIS and propose a management protocol for gonad retention.

Identification of two additional novel mutations in the AR gene associated with severe forms of androgen insensitivity syndrome

The Androgen insensitivity syndrome (AIS) in its complete form (CAIS) is a disorder in abnormal male development characterized by a complete female phenotype in a 46,XY individual. The most frequent cause of this disorder is a hemizygous mutation in androgen receptor (AR) gene located in X chromosome. The first aim of this study was to confirm the clinical diagnosis in a series of Tunisian patients with a typical phenotype of CAIS by molecular genetic analysis. The second aim was to determine the AR mutational profile in the local population. The entire coding region and the exon-intron junctions of the AR gene were sequenced in a series of ten patients. AR defects were found in nine patients. Despite the small number of cases, two of the nine identified mutations were novel. The first novel mutation was an 8-bp deletion in exon 1 (c.862_869del) resulting in a frameshift (p.A288Qfs*14). The second was a splice site mutation c.1885 + 1G > T (IVS3 + 1G > T). In this study, genetic testing has confirmed the diagnosis of most CAIS patients and has revealed two novel mechanisms responsible for the pathogenesis of AIS, as well as seven other reported mutations.

Novel Androgen Receptor Gene Variant Containing a Premature Termination Codon in a Patient with Androgen Insensitivity Syndrome

BACKGROUND

Androgen receptor (AR) mutations, which cause androgen insensitivity syndrome, impair the actions of 5α-dihydrotestosterone and testosterone, resulting in abnormal sexual development. In most cases, genetic aberrations of the AR are caused by substitutions, but also can result from mutations in splicing regions and deletions in the AR gene.

CASE

Our present report describes a female patient with 46,XY karyotype and normal female external genitalia. A novel de novo c.1669_1670insC insertion in the AR gene caused androgen insensitivity syndrome.

SUMMARY AND CONCLUSION

This report provides a detailed clinical characterization of the patient and a possible pathogenic mechanism leading to androgen insensitivity syndrome and should be particularly useful in genetic counseling.

Vaginal Dilator Therapy: A Guide for Providers for Assessing Readiness and Supporting Patients Through the Process Successfully

Vaginal dilator therapy is used to increase vaginal length for vaginal agenesis, to increase vaginal width for vaginal narrowing, and to prevent or treat stenosis after vaginal surgery. Although it is an effective therapy, many reproductive health providers have had little training on how to guide patients through this therapy. The purpose of this review is to educate providers on how to assess patient readiness and how to support patients through the process of vaginal dilation.

Novel Minimally Invasive Technique of Neovaginoplasty Using an Absorbable Adhesion Barrier

Our objective was to provide a minimally invasive neovaginoplasty technique to construct a nearly physiologic vagina to facilitate sexual functioning and appropriate vaginal length in patients with congenital vaginal agenesis. This retrospective study at a tertiary care hospital comprised 52 patients with congenital vaginal agenesis because of Mayer-Rokitansky-Küster-Hauser syndrome or androgen insensitivity syndrome presented for vaginal reconstruction. Modified McIndoe vaginoplasty was done in all patients between 2010 and 2018 using a vaginal mold created with glove, nonadherent petroleum gauze, and Interceed absorbable adhesion barrier (Ethicon, Johnson & Johnson, Somerville, NJ) that was placed in the neovagina space created between the bladder and rectum for 7 days. Operative details, complications, length and width of the neovagina, and functional outcome were evaluated. The mean operation time was 35 minutes. The mean length of the constructed neovagina was 8.4 cm × 3.4 cm at 6 weeks follow-up. Epithelialization was completed by 4 to 6 months. All patients reported satisfactory sexual activity with no pain and good mucosal sensitivity. This modified neovaginoplasty technique is easy to perform, involves painless postoperative dilatations as the cornerstone of treatment, and results in adequate secretion, allowing lubrication and acceptable physiologic results.

Dihydrotestosterone induces minor transcriptional alterations in genital skin fibroblasts of children with and without androgen insensitivity

Endogenous and exogenous androgens induce masculinization of external genitalia through binding to the androgen receptor (AR). The target genes of androgens in external genitalia remain to be determined, although previous studies have shown that the apolipoprotein D gene (APOD) was significantly upregulated by dihydrotestosterone (DHT), the most potent androgen in humans. In the present study, we performed microarray analysis for genital skin fibroblasts obtained from four boys with buried penis (the control individuals) and a patient with partial androgen insensitivity syndrome (PAIS) due to a hypomorphic mutation in AR (the PAIS patient). We identified 24 transcripts that were upregulated or downregulated by DHT in all samples of control individuals and, to a lesser extent, in the sample of the PAIS patient. Differences between DHT-treated and -untreated samples were small; the results of 24 transcripts did not reach statistical significance. The 24 transcripts included CYP1B1, a gene possibly involved in the development of genital tubercle in mice, and APOD, as well as several genes that have been reported as androgen targets in prostate or other tissues. The results of this study indicate that androgen-mediated masculinization of external genitalia is unlikely to depend on massive transcriptional changes in specific AR target genes. Rather, minor transcriptional changes of several genes, and/or a complex molecular network may play a major role in penile development. Importantly, our data suggest the possible involvement of CYP1B1 in human genital development and confirm the clinical importance of APOD as a biomarker for AR function.

Partial androgen insensitivity syndrome presenting as pubertal gynecomastia: clinical and hormonal findings and a novel mutation in the androgen receptor gene

Pubertal gynecomastia is common, can be seen in 65% of the adolescent boys and is considered physiological. It is thought to be due to transient imbalance between the ratio of testosterone and estradiol in the early stages of puberty. It resolves in 1-2 years and requires no treatment. However, more persistent and severe pubertal gynecomastia is less common and can be associated with pathological disorders. These can be due to diminished androgen production, increased estrogen production or androgen resistance. We report a case of persistent pubertal gynecomastia due to partial androgen insensitivity syndrome (PAIS), classical hormone findings and a novel mutation in the androgen receptor (AR) gene. Learning points: Laboratory testing of follicle-stimulating hormone (FSH), leutinizing hormone (LH) and testosterone for pubertal gynecomastia is most helpful in the setting of undervirization. The hormonal finding of very high testosterone, elevated LH and estradiol and relatively normal FSH are classical findings of PAIS. Gynecomastia due to PAIS will not resolve and surgery for breast reduction should be recommended.

Functional and Structural Study of the Amino Acid Substitution in a Novel Familial Androgen Receptor Mutation (W752G) Responsible for Complete Androgen Insensitivity Syndrome

Mutations of the androgen receptor (AR) gene are the most frequent cause of 46,XY disorders of sex development. They are associated with a variety of phenotypes, ranging from phenotypic women (complete androgen insensitivity syndrome, CAIS) to milder degrees of undervirilization (partial forms) or men with only infertility (mild form). We identified a new W752G AR mutation responsible for a familial case of CAIS and performed an in vitro study and structural analysis of this mutation and the only other reported substitution affecting the same amino acid (W752R). Although sex assignment is not discussed in cases of CAIS, we show how the phenotype-genotype correlation can be refined by in vitro and structural studies according to the nature of the amino acid substitution, which in turn may have interesting impacts on the follow-up of these patients.

Androgen Insensitivity Syndrome at Prepuberty: Marked Loss of Spermatogonial Cells at Early Childhood and Presence of Gonocytes up to Puberty

Androgen insensitivity syndrome (AIS) is a hereditary condition in patients with a 46,XY karyotype in which loss-of-function mutations of the androgen receptor (AR) gene are responsible for defects in virilization. The aim of this study was to investigate the consequences of the lack of AR activity on germ cell survival and the degree of testicular development reached by these patients by analyzing gonadal tissue from patients with AIS prior to Sertoli cell maturation at puberty. Twenty-three gonads from 13 patients with AIS were assessed and compared to 18 testes from 17 subjects without endocrine disorders. The study of the gonadal structure using conventional microscopy and the ultrastructural characteristics of remnant germ cells using electron microscopy, combined with the immunohistochemical analysis of specific germ cell markers (MAGE-A4 for premeiotic germ cells and of OCT3/4 for gonocytes), enabled us to carry out a thorough investigation of germ cell life in an androgen-insensitive microenvironment throughout prepuberty until young adulthood. Here, we show that germ cell degeneration starts very early, with a marked decrease in number after only 2 years of life, and we demonstrate the permanence of gonocytes in AIS testis samples until puberty, describing 2 different populations. Additionally, our results provide further evidence for the importance of AR signaling in peritubular myoid cells during prepuberty to maintain Sertoli and spermatogonial cell health and survival.

Functional Impact of Novel Androgen Receptor Mutations on the Clinical Manifestation of Androgen Insensitivity Syndrome

Androgens are responsible for the development and maintenance of male sex characteristics. Dysfunctions in androgen action due to mutations in the androgen receptor gene (AR) can lead to androgen insensitivity syndrome (AIS) that can be classified as mild (MAIS), partial (PAIS), or complete (CAIS). We have analyzed functional effects of p.Ser760Thr, p.Leu831Phe, p.Ile899Phe, p.Leu769Val, and p.Pro905Arg mutations and the combination p.Gln799Glu + p.Cys807Phe that were identified in patients with PAIS or CAIS. The p.Leu769Val and p.Pro905Arg mutations showed complete disruption of AR action under physiological hormone concentrations; however, they differed in high DHT concentrations especially in the N/C terminal interaction assay. Mutations p.Ser760Thr, p.Leu831Phe, p.Ile899Phe presented transactivation activities higher than 20% of the wild type in physiological hormone concentrations and increased with higher DHT concentrations. However, each one showed a different profile in the N/C interaction assay. When p.Gln799Glu and p.Cys807Phe were analyzed in combination, transactivation activities <10% in physiologic hormone conditions indicated an association with a CAIS phenotype. We conclude that the functional analysis elucidated the role of mutant ARs, giving clues for the molecular mechanisms associated with different clinical AIS manifestations. Differences in hormone-dependent profiles may provide a basis for the response to treatment in each particular case.

A recurrent synonymous mutation in the human androgen receptor gene causing complete androgen insensitivity syndrome

Androgen insensitivity syndrome (AIS) is the most common cause of 46,XY disorders of sex development (46,XY DSD). This syndrome is an X-linked inheritance disease and it is caused by mutations in the human androgen receptor (AR) gene. Non-synonymous point AR mutations are frequently described in this disease, including in the complete phenotype. We present a novel synonymous mutation in the human AR gene (c.1530C > T) in four 46,XY patients from two unrelated families associated with complete androgen insensitivity syndrome (CAIS). The analysis of mRNA from testis showed that synonymous AR mutation changed the natural exon 1 donor splice site, with deletion of the last 92 nucleotides of the AR exon 1 leading to a premature stop codon 12 positions ahead resulting in a truncate AR protein. Linkage analyses suggested a probable founder effect for this mutation. In conclusion, we described the first synonymous AR mutation associated with CAIS phenotype, reinforcing the disease-causing role of synonymous mutations.

Frequency of gonadal tumours in complete androgen insensitivity syndrome (CAIS): A retrospective case-series analysis

BACKGROUND

Complete androgen insensitivity syndrome (CAIS) is an X-linked recessive disorder of sex development (DSD) where affected individuals are phenotypically female, but have an XY karyotype and testes. The risk of gonadal tumour development in CAIS may increase with age; incidence rates have been reported to be 0.8-22% in patients who have retained their gonads into adulthood. Consequently, gonadectomy has been recommended either during childhood or after puberty is complete, although there is no consensus on the optimal timing for this procedure.

OBJECTIVE AND HYPOTHESES

To establish the frequency of histological abnormalities in CAIS in relation to the age at gonadectomy.

METHOD

Data were collected from the Cambridge DSD database on patients with CAIS (n = 225; age range 3-88 years) who had undergone gonadectomy, and their age of gonadectomy, gonadal histology and immunohistochemistry.

RESULTS

Evaluable data were obtained from 133 patients. Median age at gonadectomy was 14.0 years (range: 18 days-68 years). Pubertal status was: prepuberty, n = 62; postpuberty, n = 68. Thirteen cases were aged >20 years at gonadectomy. The pattern of histology is summarised in the Summary table.

DISCUSSION

In this large case series of CAIS patients who had undergone gonadectomy, while the combined malignant and premalignant gonadal histology prevalence was 6.0%, the findings confirm the low occurrence of gonadal malignancy in CAIS, with a frequency of 1.5%. The two cases of malignancy were postpubertal. Germ cell neoplasia in situ (GCNIS) was observed in six cases, of which one occurred prepuberty and five postpuberty. The study highlighted difficulties in diagnosis of GCNIS and the need for histological analysis in expert centres.

CONCLUSION

The results support the current recommendation that gonads in CAIS can be retained until early adulthood. The small number of individuals with gonadectomy after age 20 years do not allow firm conclusion regarding later adulthood. Therefore, it is recommended that the option of gonadectomy be discussed in adulthood. Some form of regular surveillance of the gonads is then recommended, although none of the available options are ideal.

Controversies of Sex Re-assignment in Genetic Males with Congenital Inadequacy of the Penis

Sex assignment in 46XY genetic male children with congenital inadequacy of the penis (CIP) is controversial. Traditionally, children with penile length less than 2 cm at birth are considered unsuitable to be raised as males. They are typically re-assigned to female-sex and feminizing genitoplasty is usually done in infancy. However, the concept of cerebral androgen imprinting has caused paradigm shift in the philosophy of sex re-assignment. Masculinization of the brain, rather than length of the penis, is the modern criterion of sex re-assignment in CIP. This review summarizes the current understanding of the complex issue. In 46XY children with CIP, male-sex assignment appears appropriate in non-hormonal conditions such as idiopathic micropenis, aphallia and exstrophy. Female-sex re-assignment appears acceptable in complete androgen insensitivity (CAIS), while partial androgen insensitivity syndrome (PAIS) patients are highly dissatisfied with the assignment of either sex. Children with 5-alpha reductase deficiency are likely to have spontaneous penile lengthening at puberty. Hence, they are better raised as males. Although female assignment is common in pure gonadal dysgenesis, long-term results are not known to justify the decision.

Creation of a Neovagina by Laparoscopic Modified Davydov Vaginoplasty in Patients with Partial Androgen Insensitivity Syndrome

STUDY OBJECTIVE

To evaluate the feasibility, safety, and outcome of laparoscopic modified Davydov vaginoplasty in subjects with partial androgen insensitivity syndrome (PAIS).

DESIGN

A retrospective cohort study (Canadian Task Force classification III).

SETTING

A tertiary referral center.

PATIENTS

Ten continuous patients operated on between October 2008 and May 2014.

INTERVENTIONS

Laparoscopic modified Davydov vaginoplasty. The surgical technique was tailored on PAIS subjects who presented a male pelvic anatomy and, frequently, anomalies of the external genitalia.

MEASUREMENTS AND MAIN RESULTS

Anatomic success was defined as a neovaginal width allowing the insertion of 2 fingers and a neovaginal length of at least 5 cm. Functional success was defined as the presence of regular sexual intercourse. Laparoscopic modified Davydov vaginoplasty was successfully performed in all patients without surgical complications. At hospital discharge, anatomic success was achieved in all patients. At the 12-month follow-up, anatomic success was achieved in 9 patients and functional success in 7 patients. Two patients with anatomic success did not start any sexual activity by personal choice. One patient had an anatomic failure with a neovaginal length of 2 cm. This patient had not complied with the postoperative use of vaginal dilators.

CONCLUSION

This is the first study reporting the outcomes of laparoscopic modified Davydov vaginoplasty in subjects with PAIS. Postoperative long-term outcomes were comparable with those achieved in women with Rokitansky syndrome. The laparoscopic modified Davydov operation may represent the procedure of choice for the creation of a neovagina and the concomitant correction of anomalies of the external genitalia in subjects with PAIS.

Neonatal Sex Assignment in Disorders of Sex Development: A Philosophical Introspection

Management of ambiguous genitalia is highly controversial. This condition was known previously as intersex and presently as disorders of sex development (DSD). There is no consensus regarding the choice, timing and method of sex assignment in neonates with DSD. Consensus conferences could not unify the views of various stakeholders and third parties. This article philosophically examines the nature and origin of such controversies. Misconception, bias and conflicting priorities are identified as the three cardinal sources of controversies. Conceptual duality of sexes, confused notion of sex and gender, bias towards penetrative intercourse, conflict between utopian ideals and reality, unwillingness to compromise are identified as perpetuators of controversies. Suggestions are made regarding sex assignment in various types of DSD based on the understanding of published literature and the author's personal experience.

Mutational Analysis of Androgen Receptor Gene in Two Families with Androgen Insensitivity

BACKGROUND

Androgen insensitivity syndrome (AIS) is a rare X-linked disorder due to mutations in the androgen receptor (AR) gene causing end-organ resistance to the androgenic hormone.

SUBJECTS AND METHODS

Genetic studies were carried out in two families by karyotype and targeted exome sequencing of the AR gene.

RESULTS

Two novel missense mutations were identified, p.L822P and p.P392S, in two families with complete androgen insensitivity (CAIS) and partial androgen insensitivity (PAIS), respectively. Both had 46, XY karyotype. The mother was a heterozygous carrier in PAIS and negative in CAIS. These two were novel mutations, reported for the first time, in the AR gene. In silico analysis predicted that both mutations were damaging. We reviewed the various reported Indian mutations in the AR gene.

CONCLUSION

AR gene mutations cause a wide spectrum of disorders from CAIS to male infertility or primary amenorrhea. Early diagnosis is essential for gender assignment and further management, family counseling, and prenatal diagnosis.

Heterozygous Nonsense Mutation in the Androgen Receptor Gene Associated with Partial Androgen Insensitivity Syndrome in an Individual with 47,XXY Karyotype

There are only 2 patients with 47,XXY karyotype and androgen receptor (AR) gene mutation reported in the literature, and both are diagnosed as complete androgen insensitivity syndrome (CAIS). We report a 22-year-old female with 47,XXY karyotype and atypical external genitalia. Sequencing of AR revealed the heterozygous p.Asn849Lys*32 mutation, and extensive X chromosome microsatellite analysis showed homozygosity for Xp and heterozygosity for Xq, suggesting partial X maternal isodisomy. Partial androgen insensitivity syndrome (PAIS) developed in this case, probably because of the presence of the heterozygous AR mutation and random X- inactivation of the healthy allele. This is the first report of a female patient with 47,XXY karyotype and PAIS phenotype.

The Islamic Perspectives of Gender-Related Issues in the Management of Patients With Disorders of Sex Development

In Islam, the person with somatic sex ambiguity due to a disorder of sex development (DSD), such as 46,XX congenital adrenal hyperplasia or 46,XY androgen insensitivity, is recognized as khunsa. Two types of khunsa are distinguished: wadhih (discernible) and musykil (intractable). A recent fatwa (religious edict) in Malaysia decreed that it is permissible for male-assigned patients from these two groups to have gender reassignment surgery to female following diagnosis; however, the religious authority has yet to rule on the reassignment from female to male, if requested. The different schools of law in Islam agree on some aspects of gender-related issues like the position of khunsa in prayer congregations, but differ in their opinions on others such as property inheritance and bathing rituals. For purposes of illustration, this article includes three case reports on Muslim patients with DSD in Malaysia, focusing on issues of gender assignment: (1) a patient with 46,XX CAH, assigned as female, requesting reassignment to male; (2) a patient with 46,XX CAH, assigned female, and gender dysphoric, but undecided on the gender to be; and (3) a patient with 46,XY complete gonadal dysgenesis, raised female due to her phenotype at birth, diagnosed late, at age 18 years, and content to remain female. Gender-related issues from the perspective of Islamic jurisprudence are highlighted and discussed. To ensure holistic care, health-service providers involved in the care of Muslim patients with DSDs need to be aware of the Islamic perspectives on gender-related issues and involve expert religious authorities.

Case report of whole genome sequencing in the XY female: identification of a novel SRY mutation and revision of a misdiagnosis of androgen insensitivity syndrome

BACKGROUND

The 46,XY female is characterised by a male karyotype and female phenotype arising due to any interruption in the sexual development pathways in utero. The cause is usually genetic and various genes are implicated.

CASE PRESENTATION

Herein we describe a 46,XY woman who was first diagnosed with androgen insensitivity syndrome (testicular feminisation) at 18 years; however, this was later questioned due to the presence of intact Müllerian structures. The clinical phenotype suggested several susceptibility genes including SRY, DHH, NR5A1, NR0B1, AR, AMH, and AMHR2. To study candidate genes simultaneously, we performed whole genome sequencing. This revealed a novel and likely pathogenic missense variant (p.Arg130Pro, c.389G>C) in SRY, one of the major genes implicated in complete gonadal dysgenesis, hence securing this condition over androgen insensitivity syndrome as the cause of the patient's disorder of sexual development.

CONCLUSION

This case highlights the emerging clinical utility of whole genome sequencing as a tool in differentiating disorders of sexual development.

Long-term health issues related to disorders or differences in sex development/intersex

DSD (Disorders or Differences in Sex Development) and Intersex are terms used to describe a diverse group of congenital conditions where the development of the reproductive system is different from what is usually expected. These conditions usually present at birth or adolescence and the health implications are wide ranging and often life-long. Given the complexity of many of the conditions, health care input when required should be provided by a multidisciplinary team who have appropriate expertise. Holistic care should include the consideration of the risk of cancer, prevention of osteoporosis, advice on hormones, sexual health and fertility options, and ongoing support in order to optimise quality of life and wellbeing. There is little evidence on the health of this group of individuals beyond middle age. Research in this field is essential to guide clinicians in providing high-quality care but also to allow affected individuals to make informed decisions about their own health care. This review will focus on the gynaecological aspects of multidisciplinary management.

Complete Androgen Insensitivity Syndrome in Three Generations of Indian Pedigree

BACKGROUND

Androgen insensitivity syndrome or testicular feminization syndrome is a rare X-linked recessive disorder, which encompasses a wide range of phenotypes that are caused by numerous different mutations in the androgen receptor gene. Complete androgen insensitivity syndrome occurs when the body cannot use androgens at all. People with this form of the condition have the external sex characteristics of females, but do not have a uterus and therefore do not menstruate and are unable to conceive a child (infertile).

METHODS

In this paper, we report three cases of familial complete androgen insensitivity syndrome who presented with primary amenorrhea.

RESULTS

Physical examination, ultrasonography studies, and biochemical, karyotype, and molecular cytogenetic analyses were conducted. Based on the findings, they were diagnosed and confirmed as having complete androgen insensitivity syndrome.

CONCLUSION

A multidisciplinary team is needed from disclosure of the diagnosis, gender assignment, surgical management, hormonal replacement therapy, to counseling and support.

"It's Part of Me, Not All of Me": Young Women's Experiences of Receiving a Diagnosis Related to Diverse Sex Development

STUDY OBJECTIVE

To understand young women's experiences of receiving a diagnosis related to diverse sex development.

DESIGN

A qualitative narrative analysis of interviews.

SETTING

Karolinska University Hospital.

PARTICIPANTS

Nine women (aged 20-26 years) with complete androgen insensitivity syndrome, XY or XX gonadal dysgenesis.

INTERVENTIONS

Semistructured interviews.

MAIN OUTCOME MEASURES

A narrative approach was used to analyze the interviews. This involved identification of individual narratives of receiving the diagnosis, as well as identification of key issues that were common across interviews.

RESULTS

The analysis showed how participants' prediagnosis life experiences framed how medical information was perceived upon diagnosis. All participants had been informed about their condition before the study, but not all remembered the name of their diagnosis. Participants described positive characteristics of health professionals, such as being flexible and able to adapt to patients' individual needs. Clinicians' strategies, such as normalizing patients' experiences, were usually perceived as supportive, but were not always considered helpful. After the diagnosis, participants were worried about potential social, practical, and philosophical issues.

CONCLUSION

This research highlighted the importance of clinicians taking an exploratory and individualized approach to the sensitive process of disclosing a diagnosis related to diverse sex development to young adults. There are various strategies health professionals can use that might help young people to develop their knowledge about their condition: (1) repeating information to help the patient remember; (2) using language that is not too medicalized; and (3) communicating in a way that is meaningfully connected to patients' everyday lives.

Whole exome sequencing and single nucleotide polymorphism array analyses to identify germline alterations in genes associated with testosterone metabolism in a patient with androgen insensitivity syndrome and early-onset colorectal cancer

Background

Androgen insensitivity syndrome (AIS), a disorder of sexual development in 46, XY individuals, is caused by loss-of-function mutations in the androgen receptor (AR) gene. A variety of tumors have been reported in association with AIS, but no cases with colorectal cancer (CRC) have been described.

Case presentation

Here, we present a male patient with AIS who developed multiple early-onset CRCs and his pedigree. His first cousin was diagnosed with AIS and harbored the same AR gene mutation, but with no signs of CRC. The difference in clinical management for the two patients was that testosterone treatment was given to the proband for a much longer time compared with the cousin. The CRC family history was negative, and no germline mutations in well-known CRC-related genes were identified. A single nucleotide polymorphism array revealed a microduplication on chromosome 22q11.22 that encompassed a microRNA potentially related to CRC pathogenesis. In the proband, whole exome sequencing identified a polymorphism in an oncogene and 13 rare loss-of-function variants, of which two were in CRC-related genes and four were in genes associated with other human cancers.

Conclusions

By pathway analysis, all inherited germline genetic events were connected in a unique network whose alteration in the proband, together with continuous testosterone stimulation, may have played a role in CRC pathogenesis.

Electronic supplementary material

The online version of this article (doi:10.1186/s40880-016-0115-1) contains supplementary material, which is available to authorized users.

Surgery in disorders of sex development (DSD) with a gender issue: If (why), when, and how?

Ten years after the consensus meeting on disorders of sex development (DSD), genital surgery continues to raise questions and criticisms concerning its indications, its technical aspects, timing and evaluation. This standpoint details each distinct situation and its possible management in 5 main groups of DSD patients with atypical genitalia: the 46,XX DSD group (congenital adrenal hyperplasia); the heterogeneous 46,XY DSD group (gonadal dysgenesis, disorders of steroidogenesis, target tissues impairments …); gonosomic mosaicisms (45,X/46,XY patients); ovo-testicular DSD; and "non-hormonal/non chromosomal" DSD. Questions are summarized for each DSD group with the support of literature and the feed-back of several world experts. Given the complexity and heterogeneity of presentation there is no consensus regarding the indications, the timing, the procedure nor the evaluation of outcome of DSD surgery. There are, however, some issues on which most experts would agree: 1) The need for identifying centres of expertise with a multidisciplinary approach; 2) A conservative management of the gonads in complete androgen insensitivity syndrome at least until puberty although some studies expressed concerns about the heightened tumour risk in this group; 3) To avoid vaginal dilatation in children after surgical reconstruction; 4) To keep asymptomatic mullerian remnants during childhood; 5) To remove confirmed streak gonads when Y material is present; 6) It is likely that 46,XY cloacal exstrophy, aphallia and severe micropenis would do best raised as male although this is based on limited outcome data. There is general acknowledgement among experts that timing, the choice of the individual and irreversibility of surgical procedures are sources of concerns. There is, however, little evidence provided regarding the impact of non-treated DSD during childhood for the individual development, the parents, society and the risk of stigmatization. The low level of evidence should lead to design collaborative prospective studies involving all parties and using consensual protocols of evaluation.