Safety of Long-Term Growth Hormone Treatment Assessed

A worldwide, observational study of adults and adolescents with growth hormone deficiency (GHD) found long-term GH replacement was safe. These findings were published in the Journal of Clinical Endocrinology & Metabolism.

Data for this long-term follow-up study were sourced from the KIMS Pfizer International Metabolic Database cohort. Patients (N=15,809) with confirmed GHD were prescribed GH by their primary care physician. Adverse events were evaluated at up to 18 years (mean, 5.3 years).

The median age of study participants was 44.8 (range, 5.6-91.2) years, 50.5% were girls or women, 94.4% were White, 57.6% were true-naive to treatment at baseline, 59.7% had pituitary or hypothalamic tumor, 21.6% had idiopathic or congenital GHD, and 67.8% had at least 2 pituitary deficiencies.

Patients were administered a mean GH dosage of 0.30±0.30 mg/d.

At year 15, patients (n=593) had a 1.7-kg/m2 increase in body mass index (BMI), a 4.3-kg increase in weight, a 0.4-cm decrease in height, a 6.2-cm increase in waist circumference, a 0.03 increase in waist to hip ratio, a 6.3-mm Hg increase in systolic blood pressure, a 1.0-mm Hg increase in diastolic blood pressure, and a 0.5-bpm decrease in heart rate.

Approximately one-half of the patients (51.2%) experienced at least 1 adverse event, but few patients (18.8%) reported treatment-related adverse events.

The most common all-cause adverse events included arthralgia (4.6%), peripheral edema (3.9%), headache (3.6%), influenza (2.8%), depression (2.8%), and recurrence of pituitary tumor (2.7%). The most common treatment-related adverse events were peripheral edema (3.1%) and arthralgia (2.6%).

The rate of all-cause (P =.0141) and related (P =.0313) adverse events was significantly related with age at enrollment, with older patients (aged ³45 years) having higher rates than younger patients.

The rate of all-cause and related adverse events was higher among patients with pituitary or hypothalamic tumor, adult-onset GHD, and insulin-like growth factor 1 standard deviation score greater than 0; those who had prior pituitary radiation treatment; and those who took a GH dosage of no more than 0.30 mg/d (all P £..014).

A total of 1934 patients discontinued treatment, and 869 patients reduced their dose due to adverse events. Study discontinuation was highest among patients with idiopathic or congenital GHD (45.0%).

At least 1 serious adverse event occurred among 4.3% of patients. The most common serious events included recurrence of pituitary tumor (n=154; 1.0%) and death (n=21; 0.1%). The highest mortality rate was observed among patients who enrolled at 45 years of age and older (4.7%).

In total, 418 patients who had no history of cancer at baseline were diagnosed with cancer after starting GH treatment, which equated to a standardized incidence ratio of 0.92 (95% CI, 0.83-1.01).

This study was limited as data were collected during routine clinical practice and no predefined windows or reporting were set.

This study found that GH replacement therapy was safe at up to an 18-year follow-up among adolescents and adults.

Disclosure: Multiple authors declared affiliations with industry. Please refer to the original article for a full list of disclosures.

Reference

Johannsson G, Touraine P, Feldt-Rasmussen U, et al. Long-term safety of growth hormone in adults with growth hormone deficiency: overview of 15,809 GH-treated patients. J Clin Endocrinol Metab. Published online April 3, 2022. doi:10.1210/clinem/dgac199

From https://www.endocrinologyadvisor.com/home/topics/general-endocrinology/safety-of-long-term-growth-hormone-treatment-assessed/

Endocrine testing in obesity

Affiliations expand

Abstract

Endocrine disorders such as Cushing’s syndrome and hypothyroidism may cause weight gain and exacerbate metabolic dysfunction in obesity. Other forms of endocrine dysfunction, particularly gonadal dysfunction (predominantly testosterone deficiency in men and polycystic ovarian syndrome in women), and abnormalities of the hypothalamic-pituitary-adrenal axis, the growth hormone-IGF-1 system and vitamin D deficiency are common in obesity. As a result, endocrinologists may be referred people with obesity for endocrine testing and asked to consider treatment with various hormones. A recent systematic review and associated guidance from the European Society of Endocrinology provide a useful evidence summary and clear guidelines on endocrine testing and treatment in people with obesity. With the exception of screening for hypothyroidism, most endocrine testing is not recommended in the absence of clinical features of endocrine syndromes in obesity, and likewise hormone treatment is rarely needed. These guidelines should help reduce unnecessary endocrine testing in those referred for assessment of obesity and encourage clinicians to support patients with their attempts at weight loss, which if successful has a good chance of correcting any endocrine dysfunction.

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Oral Test for Adult Growth Hormone Deficiency Approved in US

The US Food and Drug Administration (FDA) has approved an orally available ghrelin agonistmacimorelin (Macrilen, Aeterna Zentaris), to be used in the diagnosis of patients with adult growth-hormone deficiency (AGHD).

Macimorelin stimulates the secretion of growth hormone from the pituitary gland into the circulatory system. Stimulated growth-hormone levels are measured in four blood samples over 90 minutes after oral administration of the agent for the assessment of growth-hormone deficiency.

Prior to the approval of macimorelin, the historical gold standard for evaluation of adult growth-hormone deficiency was the insulin tolerance test (ITT), an intravenous test requiring many blood draws over several hours.

The ITT procedure is inconvenient for patients and medical practitioners and is contraindicated in some patients, such as those with coronary heart disease or seizure disorder, because it requires the patient to experience hypoglycemia to obtain an accurate result.

Adult growth-hormone deficiency is a rare disorder characterized by the inadequate secretion of growth hormone from the pituitary gland. It can be hereditary; acquired as a result of trauma, infection, radiation therapy, or brain tumor growth; or can even emerge without a diagnosable cause. Currently, it is treated with once-daily injections of subcutaneous growth hormone.

“Clinical studies have demonstrated that growth-hormone stimulation testing for adult growth-hormone deficiency with oral…macimorelin is reliable, well-tolerated, reproducible, and safe and a much simpler test to conduct than currently available options,” said Kevin Yuen, MD, clinical investigator and neuroendocrinologist, Barrow Neurological Institute, and medical director of the Barrow Neuroendocrinology Clinic, Phoenix, Arizona, in a press release issued by Aeterna Zentaris.

“The availability of…macimorelin will greatly relieve the burden of endocrinologists in reliably and accurately diagnosing adult growth-hormone deficiency,” he added.

Aeterna Zentaris estimates that approximately 60,000 tests for suspected adult growth-hormone deficiency are conducted each year across the United States, Canada, and Europe.

“In the absence of an FDA-approved diagnostic test for adult growth-hormone deficiency, Macrilen fills an important gap and addresses a medical need for a convenient test that will better serve patients and health providers,” said Michael V Ward, chief executive officer, Aeterna Zentaris.

Macrilen is expected to be launched in the United States during the first quarter of 2018.

It is also awaiting approval in the European Union.

Follow Lisa Nainggolan on Twitter: @lisanainggolan1. For more diabetes and endocrinology news, follow us on Twitter and on Facebook.

From https://www.medscape.com/viewarticle/890457

Growth Hormone: Drug companies are growing less generous in helping patients pay for meds

For 14 years, Encino resident Ed Wright received an expensive prescription medication for free through a drug-industry program intended to assist people with limited or fixed incomes.

Now he’s rationing his doses after a change to the program that imposed a $1,100 deductible before he can get a refill.

“I can’t afford that,” Wright, 75, told me. “When I run out in a few weeks, that’s going to be it.”

He isn’t alone. Industry watchers say soaring drug prices have prompted many pharmaceutical companies to rethink long-standing programs to help subsidize purchases or even give meds away for free.

“More and more people have become aware of these programs, and demand has gone up,” said David P. Wilson, president of PRAM Insurance Services, a Brea firm that helps employers with prescription-drug benefits.

This means trouble for patients who, like Wright, can’t handle sticker shock at the drugstore.

He suffered a head injury 17 years ago that damaged his pituitary gland. In 2003, he was diagnosed as having an abnormally low level of growth hormone, which caused him to suddenly become overwhelmed with fatigue.

That’s a potentially life-threatening condition if an episode should occur while driving, walking down stairs or performing some other physical activity.

Wright’s doctor prescribed the self-injected human growth hormone Humatrope, manufactured by Eli Lilly & Co.

The cost, however, was out of reach for Wright, even with Medicare Part D. According to the drug-pricing website GoodRX, a 6-milligram cartridge of Humatrope — a one month’s supply — runs about $700.

Luckily, Wright’s fixed income made him eligible for a program called Lilly Cares, which made the drug available free of charge. He and his doctor would renew the paperwork annually, and for 14 years Wright had no difficulty receiving the med.

That’s no longer the case with the new $1,100 deductible, which requires Wright to spend that amount on prescription drugs before he can access his free Humatrope.

Wright requires few other drugs, so the deductible is an almost insurmountable barrier to maintaining normal quality of life.

Most drugmakers offer what are known as patient assistance programs, through which the company may provide meds directly to patients at little or no cost. Or the company may assist with co-payments — the patient’s out-of-pocket expense that’s not covered by an insurer.

2009 study published in the journal Health Affairs found that most patient assistance programs run by drug companies were reluctant to disclose details of the number of people they serve or the program’s eligibility requirements.

These programs “exist to provide patients with access to a wide variety of medications,” researchers concluded. However, “many details about these programs remain unclear. As a result, the extent to which these programs provide a safety net to patients is poorly understood.”

Aaron Tidball, chief Medicare advisor for the Illinois consulting firm Allsup, which assists individuals and businesses in navigating the public insurance system, said Lilly Cares “has been more generous than some programs we’ve seen.”

He said that, until now, people who qualified for Lilly’s assistance were able to receive whatever specialty meds that were prescribed by their doctor without cost or co-pay.

It should be noted, though, that Lilly has structured its program so the company benefits as well. Rather than provide drugs directly to patients, as many companies do, Lilly donates its medications to a private foundation, the Lilly Cares Foundation, which in turn deals with the public.

This allows Lilly to deduct the value of its donated drugs from its taxes. According to the nonprofit foundation’s 2015 tax return, which by law must be made public, the Lilly Cares Foundation received more than $408 million worth of drugs from the company. That figure represented the “fair market value” of the meds.

“That’s obviously a lot more than the cost to produce the drugs,” observed Jeff Geida, a Los Angeles estate lawyer who specializes in nonprofit foundations and who examined the most recent Lilly Cares tax return at my request.

In other words, Lilly was able to reduce its taxable income for the year by $408 million, although the actual expense of manufacturing the donated drugs almost certainly was just a fraction of the deducted amount.

“It’s a very good deal,” Geida said.

To be sure, the company is still doing enormous good by making millions of dollars worth of drugs available to people in need. But the inflated figures highlight the lack of transparency surrounding the true cost of prescription meds.

Julie Williams, a Lilly spokeswoman, declined to answer my questions about the Lilly Cares Foundation. But she forwarded a statement from Steven Stapleton, the foundation’s president.

He said the foundation imposed the $1,100 deductible for Medicare Part D beneficiaries “after benchmarking our program with other similar programs, helping Lilly Cares to balance all the criteria for the program and to try to help as many people as possible.”

That’s just gibberish to my ear — and doesn’t address the fact that Lilly still helps itself to that whopping tax deduction while making it considerably harder for low-income people to receive assistance.

I called the foundation and spoke with a service rep, but she said she didn’t know why the deductible was put in place. Nor could she explain how it’s in the best interest of patients with limited incomes to have to spend $1,100 on drugs before being eligible to receive a needed medicine.

Stapleton said notifications were sent to program participants in the fall of 2015 and 2016, but Wright told me he couldn’t recall receiving any such notice. The office manager of his doctor’s practice said she too was caught by surprise.

Lilly Cares made the situation even more inexplicable when it sent a notice to Wright last month formally dropping him from the program. The only reason it gave was “inactivity,” which made no sense considering that he’s been using Humatrope steadily for 14 years.

Williams, the Lilly spokeswoman, said she couldn’t discuss an individual patient.

Wright told me that, after I started poking around, he received a call from a Lilly representative. She advised him to contact the Partnership for Prescription Assistance, an industry-sponsored service intended to help people find subsidy programs that can help cover the high cost of their meds.

Wright contacted four subsidy programs through the service. Each one turned him down.

Lilly says it’s balancing all the criteria for Lilly Cares, which undoubtedly will make the company more profitable.

Wright, and the many other patients in similar positions, are a secondary consideration.

From http://www.latimes.com/business/lazarus/la-fi-lazarus-prescription-drug-assistance-20170815-story.html

Bimonthly Growth Hormone Injections to Replace Daily Injections?

At the Annual ENDO 2017 meeting in Orlando, FL, Moore et al provided an update on somavaratan, the long acting recombinant human growth hormone being investigated for children and adults with growth hormone deficiency.

Current treatment for these patients is somewhat burdensome given the need for daily subcutaneous injections. Somavaratan provides the option for bimonthly injections.

At ENDO 2017, 3 year data was presented in children given somavaratan and the data is impressive.

The 3 year data is part of an ongoing extension study following a 6 month Phase 2 trial in which 64 patients received 5.0 mg/kg/month at various dosing schedules. Of those patients, 60 continued in an open label extension study (dose adjusted to 3.5 mg/kg given twice-monthly by the beginning of Year 2 of treatment).  At ENDO 2017, data from 30 of those patients who had completed 3 years of treatment were presented.

(Insulin-like growth factor standard deviation score (IGF-I SDS) increased from -1.7 ± 0.8 at baseline to 1.1 ± 1.6 at peak (3–5 days post-injection) and -0.2 ± 0.9 at trough (end of dosing cycle) in Year 3. Of the 30 patients, 8 had transient IGF-I SDS excursions > 2.0, of which 3 events were > 3.0 (range, 2.3–3.9).

Height velocity (HV) remained consistent at 8.5 ± 1.8, 8.5 ± 1.7, and 8.1 ± 1.5 cm/year, for years 1, 2, and 3 respectively.

Height-SDS increased from -2.6 ± 0.5 at baseline to -1.9 ± 0.6, -1.4 ± 0.7, and -1.0 ± 0.7 at years 1, 2, and 3, respectively.

Treatment-related adverse events were generally mild and transient.

In an exclusive interview with Rare Disease Report, one of the investigators of the study, Bradley Miller, MD, PhD, of the University of Minnesota Masonic Children’s Hospital, said that compliance is an issue with growth hormone replacement therapy and any options that can remove the daily injection requirements would likely be well received by both patients and clinicians.

A Phase 3 study is currently underway to comparing bimonthly somavaratan treatment with daily growth hormone treatments (NCT02339090).

Somavaratan is being developed by Versartis Inc

About Growth Hormone Deficiency 

Growth hormone deficiency occurs when the pituitary gland does not produce enough growth hormone, resulting in short stature, delayed or absent puberty, and changes in muscle mass, cholesterol levels, and bone strength. The condition can be congenital, structural (malformations in the brain) or acquired (resulting from trauma, infections, tumors, radiation therapy, or other causes).

Currently, the standard of care is subcutaneous injection of a biosynthetic recombinant human growth hormone (rhGH). The frequency of the injections is based on the patient’s level of growth hormone deficiency (ie, whether growth hormone is completely absent or some growth hormone is present), but most patients require daily administration.

The rhGH treatments are typically given until the child’s maximum growth potential is achieved, often requiring many years of treatment (and increasing the risk of poor compliance).

Reference

Moore WV, Fechner PY, Nguyan HJ, et al. Safety and Efficacy of Somavaratan (VRS-317), a Long-Acting Recombinant Human Growth Hormone (rhGH), in Children with Growth Hormone Deficiency (GHD): 3-Year Update of the Vertical & VISTA Trials (NCT01718041, NCT02068521). Presented at: ENDO 2017; Orlando, FL; April 1-4, 2017. Abstract OE31-1.

From http://www.raredr.com/news/bimonthly-growth-hormone

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