Rule2025-10786

Medical Devices; Immunology and Microbiology Devices; Classification of the Device To Detect and Identify Fungal Nucleic Acids Directly in Respiratory Specimens

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Published
June 13, 2025
Effective
June 13, 2025

Issuing agencies

Health and Human Services DepartmentFood and Drug Administration

Abstract

The Food and Drug Administration (FDA, Agency, or we) is classifying the device to detect and identify fungal nucleic acids directly in respiratory specimens into class II (special controls). The special controls that apply to the device type are identified in this order and will be part of the codified language for the device to detect and identify fungal nucleic acids directly in respiratory specimens' classification. We are taking this action because we have determined that classifying the device into class II (special controls) will provide a reasonable assurance of safety and effectiveness of the device. We believe this action will also enhance patients' access to beneficial innovative devices, in part by reducing regulatory burdens.

Full Text

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<title>Federal Register, Volume 90 Issue 113 (Friday, June 13, 2025)</title>
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[Federal Register Volume 90, Number 113 (Friday, June 13, 2025)]
[Rules and Regulations]
[Pages 24966-24969]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-10786]


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DEPARTMENT OF HEALTH AND HUMAN SERVICES

Food and Drug Administration

21 CFR Part 866

[Docket No. FDA-2025-N-1262]


Medical Devices; Immunology and Microbiology Devices; 
Classification of the Device To Detect and Identify Fungal Nucleic 
Acids Directly in Respiratory Specimens

AGENCY: Food and Drug Administration, Department of Health and Human 
Services (HHS).

ACTION: Final amendment; final order.

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SUMMARY: The Food and Drug Administration (FDA, Agency, or we) is 
classifying the device to detect and identify fungal nucleic acids 
directly in respiratory specimens into class II (special controls). The 
special controls that apply to the device type are identified in this 
order and will be part of the codified language for the device to 
detect and identify fungal nucleic acids directly in respiratory 
specimens' classification. We are taking this action because we have 
determined that classifying the device into class II (special controls) 
will provide a reasonable assurance of safety and effectiveness of the 
device. We believe this action will also enhance patients' access to 
beneficial innovative devices, in part by reducing regulatory burdens.

[[Page 24967]]


DATES: This order is effective June 13, 2025. The classification was 
applicable on November 29, 2017.

FOR FURTHER INFORMATION CONTACT: Ryan Lubert, Center for Devices and 
Radiological Health, Food and Drug Administration, 10903 New Hampshire 
Ave., Bldg. 66, Rm. 3414, Silver Spring, MD 20993-0002, 240-402-6357, 
<a href="/cdn-cgi/l/email-protection#613318000f4f2d1403041315210705004f0909124f060e17"><span class="__cf_email__" data-cfemail="52002b333c7c1e2730372026123436337c3a3a217c353d24">[email&#160;protected]</span></a>.

SUPPLEMENTARY INFORMATION:

I. Background

    Upon request, FDA has classified the device to detect and identify 
fungal nucleic acids directly in respiratory specimens as class II 
(special controls), which we have determined will provide a reasonable 
assurance of safety and effectiveness. In addition, we believe this 
action will enhance patients' access to beneficial innovation, in part 
by reducing regulatory burdens by placing the device into a lower 
device class than the automatic class III assignment.
    The automatic assignment of class III occurs by operation of law 
and without any action by FDA, regardless of the level of risk posed by 
the new device. Any device that was not in commercial distribution 
before May 28, 1976, is automatically classified as, and remains 
within, class III and requires premarket approval unless and until FDA 
takes an action to classify or reclassify the device (see 21 U.S.C. 
360c(f)(1)). We refer to these devices as ``postamendments devices'' 
because they were not in commercial distribution prior to the date of 
enactment of the Medical Device Amendments of 1976, which amended the 
Federal Food, Drug, and Cosmetic Act (FD&C Act).
    FDA may take a variety of actions in appropriate circumstances to 
classify or reclassify a device into class I or II. We may issue an 
order finding a new device to be substantially equivalent under section 
513(i) of the FD&C Act (see 21 U.S.C. 360c(i)) to a predicate device 
that does not require premarket approval. We determine whether a new 
device is substantially equivalent to a predicate device by means of 
the procedures for premarket notification under section 510(k) of the 
FD&C Act (21 U.S.C. 360(k)) and part 807 (21 CFR part 807).
    FDA may also classify a device through ``De Novo'' classification, 
a common name for the process authorized under section 513(f)(2) of the 
FD&C Act (see also part 860, subpart D (21 CFR part 860, subpart D)). 
Section 207 of the Food and Drug Administration Modernization Act of 
1997 (Pub. L. 105-115) established the first procedure for De Novo 
classification. Section 607 of the Food and Drug Administration Safety 
and Innovation Act (Pub. L. 112-144) modified the De Novo application 
process by adding a second procedure. A device sponsor may utilize 
either procedure for De Novo classification.
    Under the first procedure, the person submits a 510(k) for a device 
that has not previously been classified. After receiving an order from 
FDA classifying the device into class III under section 513(f)(1) of 
the FD&C Act, the person then requests a classification under section 
513(f)(2).
    Under the second procedure, rather than first submitting a 510(k) 
and then a request for classification, if the person determines that 
there is no legally marketed device upon which to base a determination 
of substantial equivalence, that person requests a classification under 
section 513(f)(2) of the FD&C Act.
    Under either procedure for De Novo classification, FDA is required 
to classify the device by written order within 120 days. The 
classification will be according to the criteria under section 
513(a)(1) of the FD&C Act. Although the device was automatically placed 
within class III, the De Novo classification is considered to be the 
initial classification of the device.
    We believe this De Novo classification will enhance patients' 
access to beneficial innovation, in part by reducing regulatory 
burdens. When FDA classifies a device into class I or II via the De 
Novo process, the device can serve as a predicate for future devices of 
that type, including for 510(k)s (see section 513(f)(2)(B)(i) of the 
FD&C Act). As a result, other device sponsors do not have to submit a 
De Novo request or premarket approval application to market a 
substantially equivalent device (see section 513(i) of the FD&C Act, 
defining ``substantial equivalence''). Instead, sponsors can use the 
less-burdensome 510(k) process, when necessary, to market their device.

II. De Novo Classification

    On August 1, 2017, FDA received DxNA, LLC's request for De Novo 
classification of the GeneSTAT.MDx Coccidioides Assay. FDA reviewed the 
request in order to classify the device under the criteria for 
classification set forth in section 513(a)(1) of the FD&C Act.
    We classify devices into class II if general controls by themselves 
are insufficient to provide reasonable assurance of safety and 
effectiveness, but there is sufficient information to establish special 
controls that, in combination with the general controls, provide 
reasonable assurance of the safety and effectiveness of the device for 
its intended use (see 21 U.S.C. 360c(a)(1)(B)). After review of the 
information submitted in the request, we determined that the device can 
be classified into class II with the establishment of special controls. 
FDA has determined that these special controls, in addition to the 
general controls, will provide reasonable assurance of the safety and 
effectiveness of the device.
    Therefore, on November 29, 2017, FDA issued an order to the 
requester classifying the device into class II. In this final order, 
FDA is codifying the classification of the device by adding 21 CFR 
866.3376.\1\ We have named the generic type of device a device to 
detect and identify fungal nucleic acids directly in respiratory 
specimens, and it is identified as an in vitro diagnostic device 
intended for the detection and identification of fungal pathogens in 
respiratory specimens collected from patients with signs or symptoms 
and suspicion of fungal infection. The device is intended to aid in the 
diagnosis of fungal disease in conjunction with clinical signs and 
symptoms and other laboratory findings.
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    \1\ FDA notes that the ACTION caption for this final order is 
styled as ``Final amendment; final order,'' rather than ``Final 
order.'' Beginning in December 2019, this editorial change was made 
to indicate that the document ``amends'' the Code of Federal 
Regulations. The change was made in accordance with the Office of 
Federal Register's (OFR) interpretations of the Federal Register Act 
(44 U.S.C. chapter 15), its implementing regulations (1 CFR 5.9 and 
parts 21 and 22), and the Document Drafting Handbook.
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    FDA has identified the following risks to health associated 
specifically with this type of device and the measures required to 
mitigate these risks in table 1.

[[Page 24968]]



 Table 1--Device To Detect and Identify Fungal Nucleic Acids Directly in
           Respiratory Specimens Risks and Mitigation Measures
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      Identified risks to health              Mitigation measures
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Incorrect identification or lack of    General Controls and Special
 identification of a pathogenic         Controls (1) (21 CFR
 microorganism by the device can lead   866.3376(b)(1)); (2)(i) (21 CFR
 to improper patient management.        866.3376(b)(2)(i)); (2)(ii) (21
                                        CFR 866.3376(b)(2)(ii));
                                        (2)(iii) (21 CFR
                                        866.3376(b)(2)(iii)); (2)(iv)
                                        (21 CFR 866.3376(b)(2)(iv));
                                        (2)(v) (21 CFR
                                        866.3376(b)(2)(v)); (3)(i) (21
                                        CFR 866.3376(b)(3)(i)); (3)(ii)
                                        (21 CFR 866.3376(b)(3)(ii)); and
                                        (3)(iii) (21 CFR
                                        866.3376(b)(3)(iii).
Failure to correctly interpret test    General Controls and Special
 results.                               Controls (1) (21 CFR
                                        866.3376(b)(1)); (2)(iii) (21
                                        CFR 866.3376(b)(2)(iii));
                                        (2)(iv) (21 CFR
                                        866.3376(b)(2)(iv)); and (2)(v)
                                        (21 CFR 866.3376(b)(2)(v)).
Failure to correctly operate the       General Controls and Special
 instrument.                            Controls (1) (21 CFR
                                        866.3376(b)(1)); (2)(i) (21 CFR
                                        866.3376(b)(2)(i)); (3)(ii) (21
                                        CFR 866.3376(b)(3)(ii)); and
                                        (3)(iii) (21 CFR
                                        866.3376(b)(3)(iii).
------------------------------------------------------------------------

    FDA has determined that special controls, in combination with the 
general controls, address these risks to health and provide reasonable 
assurance of safety and effectiveness. For a device to fall within this 
classification, and thus avoid automatic classification in class III, 
it would have to comply with the special controls named in this final 
order. The necessary special controls appear in the regulation codified 
by this order. This device is subject to premarket notification 
requirements under section 510(k) of the FD&C Act.

III. Analysis of Environmental Impact

    The Agency has determined under 21 CFR 25.34(b) that this action is 
of a type that does not individually or cumulatively have a significant 
effect on the human environment. Therefore, neither an environmental 
assessment nor an environmental impact statement is required.

IV. Paperwork Reduction Act of 1995

    This final order establishes special controls that refer to 
previously approved collections of information found in other FDA 
regulations and guidance. These collections of information are subject 
to review by the Office of Management and Budget (OMB) under the 
Paperwork Reduction Act of 1995 (44 U.S.C. 3501-3521). The collections 
of information in part 860, subpart D, regarding De Novo classification 
have been approved under OMB control number 0910-0844; the collections 
of information in 21 CFR part 814, subparts A through E, regarding 
premarket approval, have been approved under OMB control number 0910-
0231; the collections of information in part 807, subpart E, regarding 
premarket notification submissions, have been approved under OMB 
control number 0910-0120; the collections of information in 21 CFR part 
820 have been approved under OMB control number 0910-0073; and the 
collections of information in 21 CFR parts 801 and 809, regarding 
labeling, have been approved under OMB control number 0910-0485.

List of Subjects in 21 CFR Part 866

    Biologics, Laboratories, Medical devices.

    Therefore, under the Federal Food, Drug, and Cosmetic Act and under 
authority delegated to the Commissioner of Food and Drugs, 21 CFR part 
866 is amended as follows:

PART 866--IMMUNOLOGY AND MICROBIOLOGY DEVICES

0
1. The authority citation for part 866 continues to read as follows:

    Authority: 21 U.S.C. 351, 360, 360c, 360e, 360j, 360l, 371.


0
2. Add Sec.  866.3376 to subpart D to read as follows:


Sec.  866.3376  Device to detect and identify fungal nucleic acids 
directly in respiratory specimens.

    (a) Identification. A device to detect and identify fungal nucleic 
acids directly in respiratory specimens is an in vitro diagnostic 
device intended for the detection and identification of fungal 
pathogens in respiratory specimens collected from patients with signs 
or symptoms and suspicion of fungal infection. The device is intended 
to aid in the diagnosis of fungal disease in conjunction with clinical 
signs and symptoms and other laboratory findings.
    (b) Classification. Class II (special controls). The special 
controls for this device are:
    (1) The intended use must include a detailed description of what 
the device detects, the type of results provided to the user, the 
clinical indications appropriate for test use, and the specific 
population(s) and testing location(s) for which the device is intended.
    (2) The labeling required under 21 CFR 809.10(b) must include:
    (i) A detailed device description, including the parts that make up 
the device, instrument requirements, ancillary reagents required but 
not provided, and a detailed explanation of the methodology including 
all pre-analytical methods for processing of specimens.
    (ii) Performance characteristics from analytical studies, including 
analytical sensitivity (Limit of Detection), inclusivity, 
reproducibility, interference, cross-reactivity, interfering 
substances, carryover/cross-contamination, and specimen stability.
    (iii) A statement that the device is intended to be used in 
conjunction with clinical history, signs and symptoms and the results 
of other diagnostic tests.
    (iv) A detailed explanation of the interpretation of test results 
and acceptance criteria for any quality control testing.
    (v) A limiting statement that negative results do not preclude the 
possibility of infection, and should not be used as the sole basis for 
diagnosis, treatment, or other patient management decisions.
    (3) Design verification and validation activities must include:
    (i) Performance characteristics from clinical studies that include 
prospective (sequential) samples and, if appropriate, additional 
characterized samples. The study must be performed on a study 
population consistent with the intended use population and compare the 
device performance to results obtained from comparator methods. 
Documentation from the clinical studies must include the clinical study 
protocol (including predefined statistical analysis plan), clinical 
study report, and results of all statistical analyses.
    (ii) A detailed device description of the following:
    (A) Overall device design including all parts that make up the 
device and all control elements incorporated into the testing 
procedure.
    (B) Thorough description of the methodology including, primer/probe

[[Page 24969]]

sequences, primer/probe design and rationale for target sequence 
selection.
    (C) Computational path from collected raw data to reported result 
(e.g., how collected raw signals are converted into a reported signal 
and result, as applicable.
    (iii) A detailed documentation for device software, including, 
software applications and hardware-based devices that incorporate 
software.

    Dated: June 9, 2025.
Grace R. Graham,
Deputy Commissioner for Policy, Legislation, and International Affairs.
[FR Doc. 2025-10786 Filed 6-12-25; 8:45 am]
BILLING CODE 4164-01-P


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