Genome-wide analyses identify 21 infertility loci and over 400 reproductive hormone loci across the allele frequency spectrum

Genome-wide association studies (GWASs) may help inform treatments for infertility, whose causes remain unknown in many cases. Here we present GWAS meta-analyses across six cohorts for male and female infertility in up to 41,200 cases and 687,005 controls. We identified 21 genetic risk loci for infertility (P≤5E-08), of which 12 have not been reported for any reproductive condition. We found positive genetic correlations between endometriosis and all-cause female infertility (rg=0.585, P=8.98E-14), and between polycystic ovary syndrome and anovulatory infertility (rg=0.403, P=2.16E-03). The evolutionary persistence of female infertility-risk alleles in EBAG9 may be explained by recent directional selection. We additionally identified up to 269 genetic loci associated with follicle-stimulating hormone (FSH), luteinising hormone, oestradiol, and testosterone through sex-specific GWAS meta-analyses (N=6,095-246,862). While hormone-associated variants near FSHB and ARL14EP colocalised with signals for anovulatory infertility, we found no rg between female infertility and reproductive hormones (P>0.05). Exome sequencing analyses in the UK Biobank (N=197,340) revealed that women carrying testosterone-lowering rare variants in GPC2 were at higher risk of infertility (OR=2.63, P=1.25E-03). Taken together, our results suggest that while individual genes associated with hormone regulation may be relevant for fertility, there is limited genetic evidence for correlation between reproductive hormones and infertility at the population level. We provide the first comprehensive view of the genetic architecture of infertility across multiple diagnostic criteria in men and women, and characterise its relationship to other health conditions.

The genetic architecture of sporadic and multiple consecutive miscarriage

Miscarriage is a common, complex trait affecting ~15% of clinically confirmed pregnancies. Here we present the results of large-scale genetic association analyses with 69,054 cases from five different ancestries for sporadic miscarriage, 750 cases of European ancestry for multiple (≥3) consecutive miscarriage, and up to 359,469 female controls. We identify one genome-wide significant association (rs146350366, minor allele frequency (MAF) 1.2%, P = 3.2 × 10-8, odds ratio (OR) = 1.4) for sporadic miscarriage in our European ancestry meta-analysis and three genome-wide significant associations for multiple consecutive miscarriage (rs7859844, MAF = 6.4%, P = 1.3 × 10-8, OR = 1.7; rs143445068, MAF = 0.8%, P = 5.2 × 10-9, OR = 3.4; rs183453668, MAF = 0.5%, P = 2.8 × 10-8, OR = 3.8). We further investigate the genetic architecture of miscarriage with biobank-scale Mendelian randomization, heritability, and genetic correlation analyses. Our results show that miscarriage etiopathogenesis is partly driven by genetic variation potentially related to placental biology, and illustrate the utility of large-scale biobank data for understanding this pregnancy complication.

Large-scale meta-analysis highlights the hypothalamic-pituitary-gonadal axis in the genetic regulation of menstrual cycle length

The normal menstrual cycle requires a delicate interplay between the hypothalamus, pituitary and ovary. Therefore, its length is an important indicator of female reproductive health. Menstrual cycle length has been shown to be partially controlled by genetic factors, especially in the follicle-stimulating hormone beta-subunit (FSHB) locus. A genome-wide association study meta-analysis of menstrual cycle length in 44 871 women of European ancestry confirmed the previously observed association with the FSHB locus and identified four additional novel signals in, or near, the GNRH1, PGR, NR5A2 and INS-IGF2 genes. These findings not only confirm the role of the hypothalamic-pituitary-gonadal axis in the genetic regulation of menstrual cycle length but also highlight potential novel local regulatory mechanisms, such as those mediated by IGF2.

Discordance in the Dependence on Kisspeptin Signaling in Mini Puberty vs Adolescent Puberty: Human Genetic Evidence

CONTEXT

Hypothalamic kisspeptin signaling plays a critical role in the initiation and maintenance of reproductive function. Biallelic mutations in the coding sequence of KISS1R (GPR54) have been identified in patients with idiopathic hypogonadotropic hypogonadism, but it is unknown whether biallelic variants can also be associated with related reproductive disorders.

CASE DESCRIPTION

A missense homozygous variant (c.890G>T p.R297L) in KISS1R was identified in a child who presented with microphallus and bilateral cryptorchidism. This variant has been reported to reduce, but not abolish, postreceptor signaling in vitro. Biochemical evaluation during the neonatal period revealed low testosterone levels. By 11 years and 8 months, the boy began demonstrating increases in testicular volume. By 17 years and 3 months, his testicular volume was 20 mL; his penile length was 7.3 cm; and he had adult levels of circulating gonadotropins and testosterone.

CONCLUSION

This case report associates biallelic loss-of-function mutations in KISS1R with normal timing of adolescent puberty. Because these coding sequence variants occurred in a patient with microphallus and cryptorchidism, they demonstrate different levels of dependence of the hypothalamic-pituitary-gonadal cascade on kisspeptin signaling at distinct times in the reproductive life span. The suppression of the hypothalamic-pituitary-gonadal cascade during early life but not adolescence suggests that the mini puberty of infancy depends more on kisspeptin-induced, gonadotropin-releasing hormone-induced luteinizing hormone secretion than does adolescent puberty.

Microarray-based characterization of a colony assay used to investigate endothelial progenitor cells and relevance to endothelial function in humans

OBJECTIVE

An assay proposed to quantify endothelial progenitor cell (EPC) colonies in humans was investigated to determine the phenotype of recovered cells and their relevance to in vivo endothelial function.

METHODS AND RESULTS

Twelve sedentary subjects participating in a worksite wellness program underwent endothelial flow-mediated dilation (FMD) testing of the brachial artery and blood sampling for EPC colony assay. Microarray-based genotypic characterization of colonies showed surface markers consistent with T lymphocyte phenotype, but not with an EPC (CD34, CD133, VEGFR-2) or endothelial (CD146) phenotype. Gene expression patterns more closely matched T lymphocytes (r=0.87) than endothelial cells (r=0.66) in our microarray database. Flow cytometry of colonies confirmed large populations of CD3+CD45+ T cells (>75%) and few CD146+CD45- endothelial cells (<1%). Further, there was no correlation between colony number and the magnitude of FMD (r=-0.1512, P=0.6389). After exercise training, subjects improved FMD, from 6.7+/-2.0 to 8.7+/-1.9% (P=0.0043). Colonies also increased (P=0.0210), but without relation to FMD (r=0.1074, P=0.7396). T lymphocyte phenotype persisted after exercise (r=0.87).

CONCLUSIONS

Cells in a commonly used EPC colony assay have a gene expression and cell surface marker profile consistent with a predominance of T lymphocytes and have an unclear relevance to endothelial function, either before or after exercise training.

An effort to improve electronic health record medication list accuracy between visits: Patients’ and physicians’ response

OBJECTIVE

To evaluate the efficacy of a secure web-based patient portal called Patient Gateway (PG) in producing more accurate medication lists in the electronic health record (EHR), and whether sending primary care physicians (PCPs) a clinical message updating them on the information their patients provided caused physicians to update the EHR medication list.

METHODS

We compared the medication list accuracy of 84 patients using PG with that of 79 who were not. Patient-reported medication discrepancies were noted in the EHR in a clinical note by research staff and a message was sent to the participants' PCPs notifying them of the updated information.

RESULTS

Participants were taking 665 medications according to the EHR, and reported 273 additional medications. A lower percentage of PG users' drug regimens (54% versus 61%, p=0.07) were reported to be correct than those of PG non-users, although PG users took significantly more medications than their non-user counterparts (5.0 versus 3.1 medications, p=0.0001). Providing patient-reported information in a clinical note and sending a clinical message to the primary care doctor did not result in PCPs updating their patients' EHR medication lists.

CONCLUSIONS

Medication lists in EHRs were frequently inaccurate and most frequently overlooked over-the-counter (OTC) and non-prescription drugs. Patients using a secure portal had just as many discrepancies between medication lists and self-report as those who did not, and notifying physicians of discrepancies via e-mail had no effect.

Electronic health records in specialty care: a time-motion study

BACKGROUND

Electronic health records (EHRs) have great potential to improve safety, quality, and efficiency in medicine. However, adoption has been slow, and a key concern has been that clinicians will require more time to complete their work using EHRs. Most previous studies addressing this issue have been done in primary care.

OBJECTIVE

To assess the impact of using an EHR on specialists' time. DESIGN Prospective, before-after trial of the impact of an EHR on attending physician time in four specialty clinics at an integrated delivery system: cardiology, dermatology, endocrine, and pain.

MEASUREMENTS

We used a time-motion method to measure physician time spent in one of 85 designated activities.

RESULTS

Attending physicians were monitored before and after the switch from paper records to a web-based ambulatory EHR. Across all specialties, 15 physicians were observed treating 157 patients while still using paper-based records, and 15 physicians were observed treating 146 patients after adoption. Following EHR implementation, the average adjusted total time spent per patient across all specialties increased slightly but not significantly (Delta = 0.94 min., p = 0.83) from 28.8 (SE = 3.6) to 29.8 (SE = 3.6) min.

CONCLUSION

These data suggest that implementation of an EHR had little effect on overall visit time in specialty clinics.

Improving electronic health record (EHR) accuracy and increasing compliance with health maintenance clinical guidelines through patient access and input

BACKGROUND

Health maintenance is crucial for preventing morbidity and premature mortality, but many patients do not receive preventive services at recommended intervals. One reason for this is the lack of up-to-date information accurately reflecting patients' history. Electronic health records (EHRs) can be useful, but are often incomplete. Patient input has the potential to improve the accuracy of this information. In this study, we assessed the current state of EHR completeness for preventive services and the added value of patient reported information.

METHODS

Participants were sent a survey, pre-populated with health maintenance procedure information from their EHRs. They were asked to review this information and indicate whether it was accurate or if they had a procedure done more recently. Of 1098 patients recruited from a primary care practice, 163 returned the survey. When a patient reported a more recent test than was noted in the EHR, researchers updated the EHR to reflect the additional information. Data were also gathered from the EHR 6 months after surveys were completed to analyze whether providing due test information encouraged patients to get tested and vaccinated. A review of medical records was performed on a control group to analyze differences in adherence to preventive guidelines between those that were notified of their overdue status and those who were not notified.

RESULTS

The EHR was frequently incomplete when compared to patient report. In particular, many patients were misidentified as being overdue for health maintenance procedures when they had obtained them in other places. Showing patients their information resulted in little impact on overall adherence. However, with the cumulative effects of additional patient-reported procedures and procedures performed after the survey, intervention patients had higher documented adherence rates for every procedure than the control group.

CONCLUSIONS

Health maintenance data in EHRs were often incomplete. Patients were often able to provide useful information, demonstrating the value of patient contributions in keeping records up-to-date.

Primary care physician attitudes towards using a secure web-based portal designed to facilitate electronic communication with patients

BACKGROUND

Patient demand for email contact with physician practices is high. If physicians met this demand, improvements in communication, quality of care and patient satisfaction could result. However, physicians have typically been hesitant to communicate electronically with patients, largely due to concerns relating to workload, security and lack of compensation.

GOAL

To assess physician attitudes towards electronic communication with patients six months after the implementation of an application called Patient Gateway. Patient Gateway allows patients to access an extract of their medical record and facilitates online communication with medical practices.

METHODS

A paper-based survey was administered to the 43 primary care physicians in one integrated delivery system, with a 56% (24/43) response rate.

RESULTS

Overall, physicians felt that Patient Gateway's impact on their practices was positive, especially in the areas of refill and referral request management and appointment scheduling. However, physicians are still hesitant to increase general electronic communication with patients; none opted to use Patient Gateway's general messaging function with patients, and those who had previously used outside systems to exchange emails with some patients continued to communicate with only a small proportion of their patient panel in this way. However, 38% of physicians already communicate with their own physicians via email, and another 19% would like to do so.

CONCLUSIONS

Physicians' fears about being overwhelmed with messages were not realised. While physicians were generally enthusiastic about the application, none used it directly to communicate with patients. Over three-quarters of respondents indicated that they would be more enthusiastic about electronic communication with patients if this time were compensated.

Primary care physician time utilization before and after implementation of an electronic health record: a time-motion study

Despite benefits associated with the use of electronic health records (EHRs), one major barrier to adoption is the concern that EHRs may take longer for physicians to use than paper-based systems. To address this issue, we performed a time-motion study in five primary care clinics. Twenty physicians were observed and specific activities were timed during a clinic session before and after EHR implementation. Surveys evaluated physicians' perceptions regarding the EHR. Post-implementation, the adjusted mean overall time spent per patient during clinic sessions decreased by 0.5 min (p=0.86; 95% confidence interval [-5.05, 6.04]) from a pre-intervention adjusted average of 27.55 min (SE=2.1) to a post-intervention adjusted average of 27.05 min (SE=1.6). A majority of survey respondents believed EHR use results in quality improvement, yet only 29% reported that EHR documentation takes the same amount of time or less compared to the paper-based system. While the EHR did not require more time for physicians during a clinic session, further studies should assess the EHR's potential impact on non-clinic time.

The role of primary care non-physician clinic staff in e-mail communication with patients

BACKGROUND

Few studies have explicitly addressed how e-mail technology may affect non-physician clinic staff, even though these staff typically manage tasks well suited to e-mail communication such as requests for prescription renewals, laboratory and test results, and referral authorizations.

GOAL

We conducted a survey of staff members at 10 primary care clinics in Boston to further evaluate non-physician staff attitudes towards e-mail use with patients. We subsequently re-surveyed staff at three of these clinics after the implementation of Patient Gateway, an application designed to facilitate secure electronic communication between patients and the clinics.

RESULTS

Before Patient Gateway implementation, 88% of surveyed staff were already using e-mail at least once a day for work-related communication. Many of these staff members (24%) were already using e-mail with patients. Forty-eight percent of staff members thought that increasing e-mail use with patients could improve the quality of care their practices delivered. However, staff reported having some hesitations about increasing e-mail use with patients, mostly relating to security, confidentiality, and workload. After Patient Gateway implementation, users reported high satisfaction with the application and staff in general (users and non-users of Patient Gateway) felt more enthusiastic about increasing e-mail use with patients.

CONCLUSIONS

In order to maximize the potential of staff-patient e-mail, it is important that concerns relating to security, confidentiality, and workflow are addressed, and patients must be given guidelines for the appropriate use of e-mail. Secure applications designed with these issues in mind are likely to be well received by staff members, and in turn physicians.